Parts and accessories for specified photographic and projection apparatus

1. Scope and Applicability

This PCR applies to finished replacement parts and accessories classified in CPC 3.0 subclass 48353: parts and accessories for photographic and cinematographic cameras; cinematographic projectors; photographic flash apparatus; non-cinematographic image projectors and photographic enlargers or reducers; photographic-laboratory apparatus and equipment parts not elsewhere classified; and parts and accessories of negatoscopes and projection screens. The product reported by a foreground data package shall be one physically specified part or accessory with a declared compatibility and function.

The PCR covers cradle-to-factory-gate production of that sale-ready product. Foreground activities include the reporting manufacturer's material and component receipt, forming, machining, moulding, optical working, surface treatment, assembly, testing, and packaging when performed. Purchased materials and completed components enter through upstream datasets.

Complete cameras, complete projectors, complete photographic flash apparatus, complete laboratory apparatus, complete negatoscopes, complete projection screens, objective lenses classified separately, photographic services, sensitized photographic media, and photographic chemicals sold as products are excluded. Use and end-of-life are outside the default boundary. A product that combines a covered accessory with another function shall be included only when the covered function and mass can be separately identified.

2. Product Category Identity

Field	Value
canonical_pcr_id	pcr.metal-products-machinery-and-equipment.medical-appliances-precision-and-optical-instruments-watches-and-clocks.parts-and-accessories-for-the-goods-of-subclass-48322-parts-and-accessories-of-cinemato-0072ad9a
classification_refs	CPC 3.0: 48353 (exact)
covered_products	Finished replacement parts and accessories for the photographic, cinematographic, projection, photographic-laboratory, negatoscope, and projection-screen products named in CPC 48353
excluded_products	Complete apparatus; separately classified objective lenses; photographic services; sensitized media; photographic chemicals sold as products; generic parts with no documented compatibility with a covered apparatus
representative_product	One sale-ready, quality-conforming replacement part or accessory of a declared configuration
production_route	Configuration-specific combination of metal forming or machining, polymer moulding, optical-glass working, screen-fabric conversion, surface treatment, electronic assembly, final assembly, testing, and packaging
market_state	Finished and released for sale at the reporting factory gate, packaged when packaging is supplied with the product

3. Reference Flow

Field	Value
What	A sale-ready, quality-conforming finished part or accessory within the covered product category
How much	1 kg net finished-product mass, excluding packaging
How well	Meets the declared drawing or specification, compatibility, functional test, surface-finish, and release criteria
How long or cycle	Not applicable to the factory-gate reference flow; any warranted service life is reported as a qualifier and is not used to change the reference amount
reference_flow_link	The reference product output row reference_product from process product_manufacturing

Field	Value
Reference amount	1 kg
Reference product flow	Parts and accessories for the goods of subclass 48322, parts and accessories of cinematographic projectors, parts and accessories of photographic flashlight apparatus, parts and accessories of image projectors (except cinematographic) and photographic (except cinematographic) enlargers and reducers, parts and accessories n.e.c. of apparatus and equipment for photographic laboratories, parts and accessories of negatoscopes and projection screens 44db14dc-0192-46b9-afaf-d9c90db9f97b
Reference flow property	Mass 93a60a56-a3c8-11da-a746-0800200b9a66
Reference unit group	Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
Reference unit	kg
Required qualifiers	part or accessory type; manufacturer and model or drawing identifier; compatible host apparatus; function; principal material and bill-of-materials revision; manufacturing-route flags; net mass; packaging state and packaging mass; factory geography; technology and reporting period; quality and functional-test criteria; surface treatment and coating formulation when applicable; recycled-content claims when applicable

When constructing a foreground data package, every required qualifier shall be declared in dataset metadata, process notes, reference flow comment, product description, or an equivalent field. Missing required qualifiers make the reference flow incomplete.

4. Measurement and Unit Rules

rule_id	Applies to	Required property	Required unit	Rule
reference_mass	reference product	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Use the measured net mass of quality-conforming finished products. Exclude packaging and rejected units from the reference amount.
batch_normalization	all inventory rows	Mass or row-specific property	per kg reference product	Divide the exchange total for the reporting period by the net mass of released conforming product from the same period and product configuration.
energy_conversion	purchased electricity	Net calorific value 93a60a56-a3c8-11da-a746-0800200b9a66	MJ	Preserve meter kWh in source records and convert to MJ using 1 kWh = 3.6 MJ; disclose included transformer and distribution losses.
count_to_mass	pieces recorded by count	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Convert counted products or packaging to mass only with a configuration-specific sampled mean mass and retain sample count, scale record, and sampling date.
water_mass	process water and wastewater	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Prefer direct mass or volume records. If volume is converted to mass, retain measured density and temperature or state and justify the conversion.

5. System Boundary

The default reporting boundary begins when purchased materials, completed components, process chemicals, packaging, water, and energy cross into the reporting factory and ends when the tested, released product is ready at the factory gate. Upstream extraction, material manufacture, and purchased-component manufacture are represented with upstream datasets. Foreground scrap, wastewater, direct air emissions, and rejects are recorded before any credit or downstream treatment model is applied.

Boundary Abstraction

Field	Value
declared_starting_condition	Purchased material and component states at receipt by the reporting factory, including grade, form, supplier geography, recycled content, and upstream dataset identity
starting_condition_role	Upstream product inputs to configuration-specific foreground manufacture
product_classification_scope	One finished part or accessory within CPC 48353; the CPC identity does not make complete apparatus or separately classified objective lenses part of the reference product
recursive_input_rule	A purchased input already within CPC 48353 is recorded as a product input with its own upstream dataset and declared configuration; do not recursively reproduce its manufacture inside the same unit process
upstream_dataset_requirement	Every purchased material, component, chemical, packaging item, water supply, and energy supply shall have a geographically and technologically representative upstream dataset or a disclosed data gap
disclosure	Report the product configuration, route flags, included and excluded operations, outsourced operations, packaging state, cut-off decisions, upstream dataset substitutions, factory geography, and reporting period

Boundary Rules

rule_id	Applies to	Rule	source_ids
boundary_01	foreground manufacture	Include all configuration-applicable forming, machining, moulding, optical working, cleaning, surface treatment, assembly, testing, and packaging operations controlled by the reporting manufacturer.	un-cpc-3-0-structure-2025; eu-jrc-stm-bref-2006
boundary_02	purchased inputs	Model purchased materials and completed components with upstream datasets and do not treat supplier burdens as zero.	ghg-protocol-product-standard-2011
boundary_03	surface treatment	When electrolytic, chemical, or coating treatment occurs, include pretreatment, treatment, rinsing, drying or curing, water, electricity, coating or treatment material, wastewater, solid residues, and direct emissions that cross the boundary.	eu-jrc-stm-bref-2006; us-epa-ap42-general-industrial-surface-coating
boundary_04	use and end-of-life	Exclude product use, host-apparatus energy, maintenance, and end-of-life from the default factory-gate dataset; add them only in a separately declared downstream lifecycle model.	ghg-protocol-product-standard-2011

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
product_manufacturing	Configuration-specific product manufacturing, testing, and packaging	required	Always include; each conditional exchange applies only when the declared product bill of materials or route uses it	foreground production	1 kg net mass of released, quality-conforming finished part or accessory

Process: Configuration-specific product manufacturing, testing, and packaging (product_manufacturing)

Inputs

Product flows

Aluminium sheet (aluminium_sheet)

Record aluminium sheet only when it is issued to the declared product configuration.

• Selected flow: aluminium sheet 4f197be4-7b3b-11dd-ad8b-0800200c9a66
• Flow property / unit: Mass / kg
• Amount rule: measured sheet mass issued to the production lots, net of documented returned unused sheet
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_bom
• Sources:

Stainless-steel sheet (stainless_steel_sheet)

Record stainless-steel sheet only when it is issued; declare alloy grade and thickness. No exact Tiangong UUID is confirmed.

• Selected flow: Stainless-steel sheet
• Flow property / unit: Mass / kg
• Amount rule: measured sheet mass issued to the production lots, net of documented returned unused sheet
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_bom
• Sources:

ABS granulate (abs_granulate)

Record ABS granulate only for a moulded ABS component in the declared configuration.

• Selected flow: Acrylonitrile butadiene styrene (ABS) granulate b895c3a1-076e-4a42-a2c0-6088890c0bd9
• Flow property / unit: Mass / kg
• Amount rule: measured dry granulate charged, less separately documented unused material returned to storage
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_bom
• Sources:

Optical-glass pressing blank (optical_glass_blank)

Record a pressing blank only when optical-glass working is performed for the covered product.

• Selected flow: Optical Glass Pressing Blank a68c2948-174f-4e17-a3ee-f2b289d50d18
• Flow property / unit: Mass / kg
• Amount rule: measured mass of optical-glass blanks issued to the production lots
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_bom
• Sources:

Projection-screen fabric (projection_screen_fabric)

Record one declared projection-screen substrate fabric only when the covered part uses it. No exact Tiangong UUID is confirmed.

• Selected flow: Polyester woven projection-screen fabric
• Flow property / unit: Mass / kg
• Amount rule: measured fabric mass cut for the production lots, net of documented returned uncut fabric
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_bom
• Sources:

Coating (coating)

Record the applied coating product only when coating is part of the declared route; disclose formulation, solids content, and application technology.

• Selected flow: Coating 59808a77-a33c-493f-8e5f-c0eb3e837943
• Flow property / unit: Mass / kg
• Amount rule: coating mass issued minus measured returned coating and separately recovered coating
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_bom
• Sources: eu-jrc-stm-bref-2006; us-epa-ap42-general-industrial-surface-coating

Purchased electricity (electricity)

Record electricity consumed by configuration-applicable production, treatment, assembly, testing, packaging, and directly supporting equipment.

• Selected flow: Electricity 890a70b7-b677-4e2a-8a1b-7d017e0a10ae
• Flow property / unit: Net calorific value / MJ
• Amount rule: submetered consumption, or documented equipment-meter allocation when a dedicated meter is unavailable
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_energy_meter
• Sources: eu-jrc-stm-bref-2006

Process water (process_water)

Record supplied process water used for cleaning, rinsing, cooling makeup, optical working, or surface treatment; exclude once-through non-contact water only when demonstrably outside the process boundary.

• Selected flow: Process Water 94a04f7e-2d5c-41f0-b182-d54a3b373a02
• Flow property / unit: Mass / kg
• Amount rule: metered or tank-balance process-water input
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_water_meter
• Sources: eu-jrc-stm-bref-2006

Printed-circuit-board assembly (pcb_assembly)

Record a populated PCB assembly only when electronics are incorporated in the declared accessory.

• Selected flow: Electronic components and PCB assemblies 1e37f859-cb9b-47ff-8b0b-5b47d65fa236
• Flow property / unit: Mass / kg
• Amount rule: BOM quantity multiplied by verified unit mass, reconciled to supplier receipts
• Value mode: Calculated value (calculated_value)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_material_bom
• Sources:

Epoxy resin (epoxy_resin)

Record epoxy resin only when an epoxy bonding or potting formulation is used; other separately used resin or hardener species require their own atomic rows in the resulting data package.

• Selected flow: Epoxy resin e2bab6ae-d42f-4fca-bab5-ae9c6692f105
• Flow property / unit: Mass / kg
• Amount rule: measured resin mass issued to and consumed by the production lots
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_bom
• Sources:

Corrugated board box (corrugated_box)

Record corrugated boxes only when supplied with the sale-ready product.

• Selected flow: corrugated board boxes 4f197bec-7b3b-11dd-ad8b-0800200c9a66
• Flow property / unit: Mass / kg
• Amount rule: box count multiplied by configuration-specific sampled box mass
• Value mode: Calculated value (calculated_value)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_material_bom
• Sources:

Low-density polyethylene film (ldpe_film)

Record LDPE film only when it is supplied with the sale-ready product.

• Selected flow: Low-density polyethylene foil (PE-LD) 2cecd3a7-d90e-44b4-aec5-1d9dfb907477
• Flow property / unit: Mass / kg
• Amount rule: measured film mass issued, or length and basis mass converted under a retained specification
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_material_bom
• Sources:

Waste flows

No waste input is prescribed. Any externally supplied waste used as a secondary material shall be represented as its own chemically or physically specific waste input in the foreground data package.

Elementary flows

No elementary input is prescribed. Elementary resource inputs, if directly measured and not embedded in upstream datasets, shall be added as individual flows.

Outputs

Product flows

Finished reference product (reference_product)

Record only tested, released, sale-ready product mass; exclude packaging and rejected products.

• Selected flow: Parts and accessories for the goods of subclass 48322, parts and accessories of cinematographic projectors, parts and accessories of photographic flashlight apparatus, parts and accessories of image projectors (except cinematographic) and photographic (except cinematographic) enlargers and reducers, parts and accessories n.e.c. of apparatus and equipment for photographic laboratories, parts and accessories of negatoscopes and projection screens 44db14dc-0192-46b9-afaf-d9c90db9f97b
• Flow property / unit: Mass / kg
• Amount rule: 1 kg net mass of quality-conforming released product
• Value mode: Fixed value (fixed_value)
• Specificity: Generic (generic)
• Normalization basis: per 1 kg reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Identity reference (identity_reference)
• Collection protocol:
• Sources: un-cpc-3-0-structure-2025

Waste flows

Aluminium scrap (aluminium_scrap)

Record segregated aluminium offcuts and machining scrap generated by the applicable route.

• Selected flow: Aluminium Scrap 96c5f842-ea53-419b-b1cd-c02c479efb45
• Flow property / unit: Mass / kg
• Amount rule: measured mass leaving production as aluminium scrap before recycling credit
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_waste_mass
• Sources:

Post-industrial steel scrap (post_industrial_steel_scrap)

Record segregated steel offcuts and machining scrap generated by the applicable route.

• Selected flow: Post-industrial steel scrap c143745d-be4f-4d8f-b403-2dcbfe685349
• Flow property / unit: Mass / kg
• Amount rule: measured mass leaving production as steel scrap before recycling credit
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_waste_mass
• Sources:

ABS moulding scrap (abs_moulding_scrap)

Record only segregated ABS sprues, runners, purge, and rejected mouldings. No exact Tiangong UUID is confirmed.

• Selected flow: ABS moulding scrap
• Flow property / unit: Mass / kg
• Amount rule: measured mass leaving production as ABS scrap before internal reuse or external treatment
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_waste_mass
• Sources:

Optical-glass grinding sludge (optical_glass_grinding_sludge)

Record dewatered optical-glass grinding sludge only when generated. No exact Tiangong UUID is confirmed.

• Selected flow: Optical-glass grinding sludge
• Flow property / unit: Mass / kg
• Amount rule: measured wet mass and solids content, reported on the declared wet or dry basis without mixing bases
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_waste_mass
• Sources:

Surface-treatment wastewater (surface_treatment_wastewater)

Record wastewater leaving cleaning, rinsing, optical working, or surface treatment before external treatment; disclose whether on-site treatment is included.

• Selected flow: Wastewater d2d44ce1-c0f4-461d-9413-f4b33e0d200f
• Flow property / unit: Mass / kg
• Amount rule: metered discharge mass or volume converted under the water-mass rule
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_wastewater
• Sources: eu-jrc-stm-bref-2006

Rejected finished part (rejected_finished_part)

Record one declared rejected finished part or accessory configuration that leaves as waste. No exact Tiangong UUID is confirmed.

• Selected flow: Rejected finished photographic or projection apparatus part or accessory
• Flow property / unit: Mass / kg
• Amount rule: measured net mass of tested units rejected and not reworked into conforming output
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_output_mass
• Sources:

Elementary flows

Non-methane volatile organic compounds to air (nmvoc_to_air)

Record direct NMVOC released from applicable coating, cleaning, and curing operations after capture and abatement; do not include upstream electricity emissions.

• Selected flow: non-methane volatile organic compounds 08a91e70-3ddc-11dd-a302-0050c2490048
• Flow property / unit: Mass / kg
• Amount rule: measured stack and fugitive release, or a documented coating-and-solvent mass balance net of recovery, retained product, captured waste, and abatement destruction
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg reference product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_nmvoc_mass_balance
• Sources: us-epa-ap42-general-industrial-surface-coating

7. Allocation and Co-product Handling

rule_id	Applies to	Rule	source_ids
allocation_01	shared production lines	Avoid allocation by submetering, production-order records, equipment time, and process subdivision for the declared product configuration.	ghg-protocol-product-standard-2011
allocation_02	unavoidable shared utilities	If subdivision is not practicable, allocate electricity, water, and shared consumables using the physical driver that causes consumption, such as machine time, treated surface area, or measured throughput; disclose the driver and sensitivity.	ghg-protocol-product-standard-2011
allocation_03	metal scrap and other wastes	Report gross generated waste before recycling credit. Do not assign avoided-production credit inside the foreground unit process; model downstream recycling in a separately declared scenario.	ghg-protocol-product-standard-2011
allocation_04	co-products with economic value	If a valuable co-product remains after subdivision, prefer a causal physical relation; use economic allocation only when no defensible physical relation exists and disclose prices, period, currency, and sensitivity.	ghg-protocol-product-standard-2011

8. Foreground Data Collection, Calculation, and Quality Rules

Data Collection Protocols

protocol_id	process_id	flow_role	record_type	raw_fields	collection_method	unit	frequency	temporal_coverage	site_scope	aggregation_rule	quality_evidence
cp_material_bom	product_manufacturing	material, component, chemical, and packaging inputs	approved BOM, issue/return records, supplier receipts, sampled unit mass	product configuration; material identity; grade or formulation; lot; quantity issued; quantity returned; unit mass; packaging state	reconcile approved BOM to warehouse issues, returns, and supplier receipts; weigh representative counted items	kg	each production lot, aggregated monthly	representative consecutive 12 months or complete shorter campaign	each reporting factory and outsourced foreground operation	sum net issued mass by atomic material and divide by conforming output mass	approved BOM revision, calibrated scale record, lot trace, supplier specification, reconciliation variance
cp_energy_meter	product_manufacturing	purchased electricity	meter and equipment log	meter start/end; kWh; production order; machine time; allocation driver; losses included	dedicated submeter preferred; otherwise allocate facility meter only across directly supporting equipment using documented drivers	kWh retained, MJ reported	monthly and at route change	same period as output	each reporting factory	convert kWh to MJ and divide by conforming output mass	meter identifier, calibration or utility invoice, allocation worksheet
cp_water_meter	product_manufacturing	process-water input	water meter, tank balance, or batch sheet	water volume or mass; density basis; process; lot; returned or recirculated water	meter process makeup and distinguish recirculated water from new supply	kg	monthly or each batch for batch treatment	same period as output	each reporting factory	sum new supplied process water and divide by conforming output mass	meter identifier, balance closure, density record when converted
cp_output_mass	product_manufacturing	conforming and rejected product	release, test, count, and scale records	configuration; released count; rejected count; unit mass; rework status; packaging mass	reconcile quality release and test records to net product weighing	kg	each production lot	same period as inputs	each reporting factory	sum net conforming mass separately from unreworked rejected mass	release authorization, functional-test record, calibrated scale, reject disposition
cp_waste_mass	product_manufacturing	segregated solid wastes	container scale ticket and waste transfer record	waste identity; material; gross/tare; moisture or solids basis; destination; internal reuse	weigh each segregated waste stream before external treatment or credit	kg	each container or batch	same period as output	each reporting factory	sum each atomic waste stream, subtract verified tare, divide by conforming output mass	scale ticket, waste code, photo or composition evidence, transfer document
cp_wastewater	product_manufacturing	surface-treatment wastewater	discharge meter and sampling record	mass or volume; density; treatment status; destination; pH; relevant metals and organics	meter each process wastewater route and retain representative composition analyses	kg	continuous or each discharge batch	same period as output	each reporting factory	sum wastewater crossing the boundary and divide by conforming output mass	meter record, sampling plan, laboratory result, treatment-flow diagram
cp_nmvoc_mass_balance	product_manufacturing	direct NMVOC to air	coating/solvent issue, recovery, waste, product-retention, capture, and abatement records	formulation VOC fraction; mass used; mass returned; mass in waste; mass retained; capture efficiency; destruction efficiency; measured emissions	use validated stack/fugitive measurement where available; otherwise close a formulation-specific mass balance	kg NMVOC	each coating campaign, aggregated monthly	same period as output	each coating line at the reporting factory	direct release = VOC input minus recovered, retained, captured-as-waste, and destroyed VOC; divide by conforming output mass	SDS or formulation certificate, issue/return records, abatement test, mass-balance closure

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
calc_01	normalized exchange	normalized amount = period exchange amount / period net mass of released conforming product	exchange amount; conforming output mass	kg, MJ, or row-specific unit per kg reference product
calc_02	counted input	input mass = accepted count × sampled mean unit mass	accepted count; sampled unit masses	kg input
calc_03	electricity	reported MJ = metered kWh × 3.6	metered kWh	MJ electricity
calc_04	NMVOC	released NMVOC = formulation VOC input − recovered VOC − VOC retained in product − VOC transferred in waste − VOC destroyed by abatement	formulation and mass-balance fields from cp_nmvoc_mass_balance	kg NMVOC released	us-epa-ap42-general-industrial-surface-coating
calc_05	product and solid-waste mass balance	closure = total mass inputs − conforming product − separately measured wastes − direct mass emissions − inventory change	material and chemical inputs; outputs; inventory change	unexplained mass and closure percentage

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
dq_01	product identity	Freeze the part number, drawing or model, compatible host apparatus, BOM revision, route, and packaging state for each aggregation group.	approved specification and BOM revision
dq_02	temporal representativeness	Use a representative consecutive 12-month period; a shorter complete campaign is allowed only for new, seasonal, or discontinued production and shall be disclosed.	dated input, output, meter, and production-order records
dq_03	completeness	Reconcile material issues, output, rejects, wastes, wastewater, and direct emissions; explain exclusions and unresolved mass-balance residuals.	mass-balance worksheet and signed exception log
dq_04	geography and technology	Identify every reporting factory, outsourced foreground operation, electricity supply geography, and major upstream dataset substitution.	site list, route diagram, supplier and dataset mapping
dq_05	measurement quality	Retain meter and scale identifiers, calibration or verification status, sampling plans, conversion factors, allocation drivers, and reconciliation variance.	calibration records and calculation workbook
dq_06	source quality	Distinguish foreground records, calculations, Tiangong identity references, and external method sources; do not convert a single published case into a range.	row-level evidence metadata and source register

9. Validation Rules

rule_id	Applies to	Rule	source_ids
validation_01	product and reference flow	Confirm that the product is one covered finished part or accessory, not a complete apparatus or separately classified objective lens, and that the reference output is exactly 1 kg net conforming product.	un-cpc-3-0-structure-2025
validation_02	configuration completeness	Confirm that all required qualifiers and route flags are populated and that every BOM material, component, chemical, packaging item, waste, and direct emission crossing the boundary is represented by an atomic exchange or an explained data gap.
validation_03	conditional rows	A conditional material or emission row may be absent only when the frozen BOM, process route, or packaging specification demonstrates non-applicability.
validation_04	mass and energy	Reperform unit conversions, normalization, input/output mass-balance closure, reject separation, and shared-utility allocation; investigate unexplained residuals.
validation_05	surface treatment	When surface treatment or solvent coating is declared, verify coating or treatment input, process water, electricity, wastewater, solid residue if generated, and direct NMVOC or a documented zero-release basis.	eu-jrc-stm-bref-2006; us-epa-ap42-general-industrial-surface-coating
validation_06	allocation	Verify that subdivision was attempted before allocation and that any remaining driver reflects a physical causal relation or is disclosed with sensitivity.	ghg-protocol-product-standard-2011
validation_07	evidence and unresolved items	Confirm that UUID-empty rows remain recorded as unresolved and that no external numeric range is introduced without at least two independent, boundary-compatible original sources.

10. Published Dataset Profile

Field	Value
dataset_role	secondary_dataset or background_dataset for one declared finished part or accessory configuration
downstream_use	Factory-gate input to host-apparatus manufacture, repair, replacement-part supply, product-footprint studies, or a separately modelled distribution/use/end-of-life lifecyclemodel
allowed_use	Attributional cradle-to-factory-gate modelling when product identity, configuration, geography, technology, period, packaging state, allocation, and data quality fit the study
excluded_use	Direct comparison of unlike functions or compatibility classes; representation of complete apparatus; substitution for a specific objective-lens PCR; use-phase or end-of-life claims without additional models; claims about configurations not covered by the frozen BOM
required_metadata	PCR id and version; CPC context; part number or drawing; compatible host apparatus; function; net mass; BOM revision; route flags; packaging state; factory geography; technology; period; allocation; upstream datasets; unresolved data gaps
required_quality_disclosure	Record coverage; measurement and calibration status; mass-balance closure; utility-allocation method; supplier-data share; treatment and emission method; reject handling; range-evidence gaps; UUID gaps
update_trigger	Change in product configuration, BOM, principal material, supplier geography, manufacturing or coating route, factory, electricity supply, packaging, allocation driver, emission control, or a material change in measured intensity

11. Data Sources

Source id	Type	Reference	Used for
un-cpc-3-0-structure-2025	official_guidance	United Nations Statistics Division, CPC Version 3.0 Structure, 30 June 2025, https://unstats.un.org/unsd/classifications/Econ/Download/In%20Text/CPC_Ver_3.0_Structure_30Jun2025.csv (retrieved 2026-09-07)	Official CPC 48353 identity and covered-product boundary
eu-jrc-stm-bref-2006	official_guidance	European Commission Joint Research Centre, Reference Document on Best Available Techniques for the Surface Treatment of Metals and Plastics, August 2006, https://bureau-industrial-transformation.jrc.ec.europa.eu/sites/default/files/2019-11/stm_bref_0806.pdf (retrieved 2026-09-07)	Conditional surface-treatment process structure; electricity, water, wastewater, solid-residue, and direct-emission collection requirements
us-epa-ap42-general-industrial-surface-coating	official_guidance	U.S. Environmental Protection Agency, AP-42 Section 4.2.2.1 General Industrial Surface Coating, reformatted January 1995, https://19january2021snapshot.epa.gov/sites/static/files/2020-10/documents/c4s02_2a.pdf (retrieved 2026-09-07)	Coating and separately purchased solvent records; formulation-specific NMVOC mass balance
ghg-protocol-product-standard-2011	standard	World Resources Institute and World Business Council for Sustainable Development, Product Life Cycle Accounting and Reporting Standard, 2011, https://ghgprotocol.org/sites/default/files/ghgp/standards/Product-Life-Cycle-Accounting-Reporting-Standard-EReader_041613_0.pdf (retrieved 2026-09-07)	Boundary disclosure, allocation hierarchy, data quality, reporting, and update rules