Other articles of cutlery; manicure or pedicure sets and instruments

1. Scope and Applicability

This PCR covers factory-gate production of non-powered base-metal other-cutlery articles and manicure or pedicure sets and instruments. Examples include paper knives, letter openers, erasing knives, pencil sharpeners and blades, nail files, nail clippers, cuticle nippers and pushers, supplied singly or as declared sets. The declared article or set must have a base-metal functional body; minor non-metal components may be present.

The boundary begins with purchased metal sheet, strip or another declared semi-finished metal at the manufacturing-site gate and ends with the conforming article or set and its sale packaging at the factory gate. Include forming, conditional heat treatment, grinding/polishing, conditional aqueous cleaning or surface treatment, assembly, packaging, direct emissions, scrap, wastewater and treatment residues. Purchased-input production is linked as upstream data. Distribution, retail, use, maintenance, end-of-life, capital equipment and buildings are excluded.

Razors and razor blades; separately classified knives and scissors; spoons, forks and similar kitchen or table ware; powered grooming equipment; manicure/pedicure preparations; and manufacturing, repair or trade services are excluded. un-cpc-3-0-2025 establishes the CPC identity; china-hainan-import-tax-list-2025 verifies professional Chinese product terminology and the distinction from table ware.

2. Product Category Identity

Field	Value
canonical_pcr_id	pcr.metal-products-machinery-and-equipment.fabricated-metal-products-except-machinery-and-equipment.other-articles-of-cutlery-manicure-or-pedicure-sets-and-instruments
classification_refs	CPC 3.0: 42915, exact classification context
covered_products	Non-powered base-metal other-cutlery articles and manicure/pedicure articles or sets
excluded_products	Razors; separately classified knives, scissors and kitchen/table ware; powered equipment; preparations; services
representative_product	All-metal stainless-steel manicure instrument or small set with ground/polished surfaces, applicable aqueous passivation, and corrugated-board sale packaging
production_route	Purchased stainless sheet/strip -> forming -> conditional heat treatment -> grinding/polishing -> conditional aqueous surface operation -> assembly/inspection -> packaging
market_state	Clean, dry, conforming finished article or declared set in sale packaging at the factory gate

3. Reference Flow

Field	Value
What	Supply of the declared manually operated other-cutlery or manicure/pedicure article or set with specified functional surfaces and contents
How much	1 kg net mass of conforming articles or set contents, excluding packaging
How well	Declared alloy, dimensions, set composition, hardness/performance, surface finish, corrosion protection, cleanliness and applicable specification
How long or cycle	One factory-gate production lot; service life is outside this gate-to-gate record
reference_flow_link	Same product as final_product_output; packaging is inventoried separately

Field	Value
Reference amount	1 kg net conforming product
Reference product flow	Other articles of cutlery, manicure or pedicure sets and instruments b5ddb141-e885-4a62-98fa-8249518d609c
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	article function; single article or set and contents; net mass; alloy and mass composition; dimensions; hardness/performance; finish and coating/passivation route; packaging composition/mass; site/geography; technology; period; reject treatment

All required qualifiers must be declared in dataset metadata, process notes, reference-flow comments, product description or equivalent fields.

4. Measurement and Unit Rules

rule_id	Applies to	Required property	Required unit	Rule
reference_net_mass	reference product	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Weigh conforming article/set contents without packaging and normalize all inventory to 1 kg net product.
set_mass_conversion	item/set records	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Convert with same-product, same-period measured mean net mass; retain sample size, calibration and variability.
electricity_conversion	electricity rows	Net calorific value 93a60a56-a3c8-11da-a746-0800200b9a66	MJ	Retain raw kWh and convert using 1 kWh = 3.6 MJ; never combine electricity and fuel.
solution_mass_basis	alkali and acid	Mass 93a60a56-a3c8-11da-a746-0800200b9a66	kg	Report purchased solution mass and concentration separately; active mass is supplementary unless the linked dataset requires it.
waste_wet_dry_basis	wastewater/sludge	Mass	kg	State wet, dry or as-received basis and retain density, moisture or solids evidence for conversions.

5. System Boundary

Boundary Abstraction

Field	Value
declared_starting_condition	Purchased semi-finished metal received with alloy, geometry, mass, supplier and delivery state identified
starting_condition_role	Factory-gate product input to foreground forming
product_classification_scope	Physical CPC 42915 articles/sets, excluding services
recursive_input_rule	Record any CPC 42915 component, repair input or return as a separate product input with its own upstream dataset; do not absorb prior production recursively
upstream_dataset_requirement	Link representative datasets for metal, chemicals, abrasive, water, electricity, gas, packaging and outsourced operations; disclose substitutions
disclosure	Declare material, product/set configuration, unit operations, outsourced work, surface chemistry, packaging, waste destinations, allocation and period

rule_id	Applies to	Rule	source_ids
boundary_gate_to_gate	all processes	Include exchanges from receipt of semi-finished metal through packaged conforming product, including direct emissions and wastes.	eu-jrc-fabricated-metal-products-2020; us-epa-mpm-2003
boundary_conditional_routes	heat/surface routes	Include each route only when used; otherwise document not-applicable production evidence rather than a zero amount.	eu-jrc-fabricated-metal-products-2020; us-epa-mpm-2003
boundary_outsourced_operations	outsourced work	Keep outsourced forming, treatment, finishing or packaging inside the system using supplier or representative process data.	eu-pef-method-2021
boundary_no_cutoff_by_cost	all flows	Do not omit a flow solely for low financial value; quantify or bound and justify exclusions for mass, energy and environmental relevance.	eu-pef-method-2021

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
forming	Material preparation and forming	required	Include actual cutting, blanking, stamping or shaping	Foreground conversion	1 kg net product
heat_treatment	Heat treatment	conditional	Include when controlled heating/cooling changes properties	Thermal treatment	1 kg treated net product
grinding_polishing	Grinding and polishing	required	Include actual deburring, sharpening, grinding, polishing or buffing	Removing/finishing	1 kg net product
aqueous_surface	Aqueous cleaning and surface treatment	conditional	Include when aqueous cleaning, passivation, pickling or chemical/electrochemical treatment is used	Surface operation	1 kg routed net product
assembly_packaging	Assembly, inspection and packaging	required	Include final assembly if any, inspection and sale packaging	Final completion	1 kg net product

Process: Material preparation and forming (forming)

Inputs

Product flows

Stainless-steel sheet or strip (stainless_steel_sheet_input)

Record representative-route purchased stainless sheet/strip; declare grade, thickness, delivery state and supplier. Another alloy requires its own exact foreground flow.

• Selected flow: Stainless-steel sheet or strip
• Flow property / unit: Mass / kg
• Amount rule: Purchased mass issued minus documented unused return
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg net conforming product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_forming_records
• Sources: eu-jrc-fabricated-metal-products-2020

Forming electricity (electricity_forming)

Record metered electrical energy for cutting and forming separately from fuel.

• Selected flow: Electricity 890a70b7-b677-4e2a-8a1b-7d017e0a10ae
• Flow property / unit: Net calorific value 93a60a56-a3c8-11da-a746-0800200b9a66 / MJ
• Amount rule: Attributable metered kWh converted to MJ
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg net conforming product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_forming_records
• Sources: eu-jrc-fabricated-metal-products-2020

Waste flows

Elementary flows

Outputs

Product flows

Waste flows

Segregated forming scrap (steel_scrap_forming)

Record cut-outs and offcuts leaving forming before any downstream recycling credit.

• Selected flow: Post-industrial steel scrap c143745d-be4f-4d8f-b403-2dcbfe685349
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: Weighed as-received segregated scrap
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg net conforming product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_forming_records
• Sources: eu-jrc-fabricated-metal-products-2020

Elementary flows

Process: Heat treatment (heat_treatment)

Inputs

Product flows

Natural gas for heat treatment (natural_gas_heat)

Measure gaseous natural gas consumed by fuel-fired heat-treatment equipment.

• Selected flow: natural gas in the gaseous state 4f19ca0e-7b3b-11dd-ad8b-0800200c9a66
• Flow property / unit: Volume 93a60a56-a3c8-22da-a746-0800200c9a66 / m3
• Amount rule: Attributable metered volume at declared reference conditions
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg product receiving fuel-fired heat treatment
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_heat_records
• Sources: eu-jrc-fabricated-metal-products-2020

Heat-treatment electricity (electricity_heat)

Measure electricity consumed by furnaces, controls and attributable heat-treatment auxiliaries.

• Selected flow: Electricity 890a70b7-b677-4e2a-8a1b-7d017e0a10ae
• Flow property / unit: Net calorific value 93a60a56-a3c8-11da-a746-0800200b9a66 / MJ
• Amount rule: Attributable metered kWh converted to MJ
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg product receiving heat treatment
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_heat_records
• Sources: eu-jrc-fabricated-metal-products-2020; us-epa-mpm-2003

Waste flows

Elementary flows

Outputs

Product flows

Waste flows

Elementary flows

Direct fossil carbon dioxide (fossil_co2_heat)

Record on-site combustion CO2 separately from upstream electricity emissions.

• Selected flow: carbon dioxide (fossil) 08a91e70-3ddc-11dd-923d-0050c2490048
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: Monitored CO2 or calculation from metered gas and documented site/period fuel-carbon data
• Value mode: Calculated value (calculated_value)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg product receiving fuel-fired heat treatment
• Basis kind: Fuel inventory (fuel_inventory)
• Evidence kind: Calculated from collection (calculated_from_collection)
• Collection protocol: cp_heat_records
• Sources: eu-jrc-fabricated-metal-products-2020

Process: Grinding and polishing (grinding_polishing)

Inputs

Product flows

Grinding and polishing electricity (electricity_grinding)

Measure electricity attributable to grinding, sharpening, deburring and polishing operations.

• Selected flow: Electricity 890a70b7-b677-4e2a-8a1b-7d017e0a10ae
• Flow property / unit: Net calorific value 93a60a56-a3c8-11da-a746-0800200b9a66 / MJ
• Amount rule: Attributable metered kWh converted to MJ
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg net conforming product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_grinding_records
• Sources: eu-jrc-fabricated-metal-products-2020; us-epa-mpm-2003

Process water for wet grinding or rinsing (process_water_grinding)

Measure process water supplied to wet grinding and its attributable rinsing steps.

• Selected flow: Process Water 94a04f7e-2d5c-41f0-b182-d54a3b373a02
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: Metered or batch-calculated water attributable to wet grinding/rinsing
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg product receiving the wet route
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_grinding_records
• Sources: us-epa-mpm-2003

Alumina abrasive (alumina_abrasive)

Declare grade, grit, compound/carrier and documented reuse.

• Selected flow: alumina 7bdf8e03-06f3-4377-bd78-ec92647a53ab
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: Purchased alumina issued minus documented unused return/reuse
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg net conforming product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_grinding_records
• Sources: us-epa-mpm-2003

Waste flows

Elementary flows

Outputs

Product flows

Waste flows

Metal-and-abrasive grinding sludge (grinding_sludge_output)

Measure the dewatered metal-and-abrasive sludge leaving wet grinding or polishing treatment.

• Selected flow: Metal-and-abrasive grinding sludge
• Flow property / unit: Mass / kg
• Amount rule: Weighed wet sludge, retaining moisture/solids content
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg net conforming product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_grinding_records
• Sources: us-epa-mpm-2003

Elementary flows

Metal-grinding particulate matter to air (grinding_particulate_output)

Record emissions after controls with measured fraction and actual compartment; the UUID remains unresolved rather than using a PM-fraction proxy.

• Selected flow: Metal-grinding particulate matter to air
• Flow property / unit: Mass / kg
• Amount rule: Validated exhaust measurement attributable to grinding/polishing
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg net conforming product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_grinding_records
• Sources: eu-jrc-fabricated-metal-products-2020

Process: Aqueous cleaning and surface treatment (aqueous_surface)

Inputs

Product flows

Surface-operation process water (process_water_surface)

Measure water supplied to cleaning, pickling, passivation and their attributable rinses.

• Selected flow: Process Water 94a04f7e-2d5c-41f0-b182-d54a3b373a02
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: Metered/batch-calculated water entering baths, cleaning and rinses
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg product receiving aqueous operations
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_surface_records
• Sources: eu-jrc-fabricated-metal-products-2020; us-epa-mpm-2003

Sodium hydroxide for alkaline cleaning (sodium_hydroxide_surface)

Measure sodium hydroxide as purchased and retain solution concentration as foreground metadata.

• Selected flow: Sodium hydroxide e0abcced-0611-4c24-9290-5a2c5a0c4169
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: Purchased solution/solid issued, with concentration and unused return documented
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg product receiving alkaline cleaning
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_surface_records
• Sources: us-epa-mpm-2003

Nitric acid for passivation or pickling (nitric_acid_surface)

Do not substitute hydrochloric acid; retain purchased concentration.

• Selected flow: Nitric acid
• Flow property / unit: Mass / kg
• Amount rule: Purchased nitric-acid solution issued minus documented unused return
• Value mode: Foreground record (foreground_record)
• Specificity: Technology-specific (technology_specific)
• Normalization basis: per 1 kg product receiving the nitric-acid route
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_surface_records
• Sources: us-epa-mpm-2003

Waste flows

Elementary flows

Outputs

Product flows

Waste flows

Contaminated metal-finishing wastewater (finishing_wastewater_output)

Measure the contaminated wastewater transferred from aqueous surface operations to treatment.

• Selected flow: Contaminated metal-finishing wastewater
• Flow property / unit: Mass / kg
• Amount rule: Metered volume times measured density, or directly weighed discharge, sent to treatment
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg product receiving aqueous operations
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_surface_records
• Sources: eu-jrc-fabricated-metal-products-2020; us-epa-mpm-2003

Metal-hydroxide treatment sludge (metal_hydroxide_sludge_output)

Measure dewatered metal-hydroxide sludge generated by on-site wastewater treatment.

• Selected flow: Metal-hydroxide treatment sludge
• Flow property / unit: Mass / kg
• Amount rule: Weighed attributable sludge with wet/dry basis and solids content
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg product receiving aqueous operations
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_surface_records
• Sources: us-epa-mpm-2003

Elementary flows

Process: Assembly, inspection and packaging (assembly_packaging)

Inputs

Product flows

Assembly and packaging electricity (electricity_assembly)

Measure electricity attributable to assembly, inspection and sale-package preparation.

• Selected flow: Electricity 890a70b7-b677-4e2a-8a1b-7d017e0a10ae
• Flow property / unit: Net calorific value 93a60a56-a3c8-11da-a746-0800200b9a66 / MJ
• Amount rule: Attributable metered kWh converted to MJ
• Value mode: Foreground record (foreground_record)
• Specificity: Site-specific (site_specific)
• Normalization basis: per 1 kg net conforming product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_assembly_records
• Sources: eu-jrc-fabricated-metal-products-2020

Corrugated-board sale boxes (corrugated_box_packaging)

Additional packaging components require separate concrete flow cards in the foreground package.

• Selected flow: corrugated board boxes 4f197bec-7b3b-11dd-ad8b-0800200c9a66
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: Bill-of-material or packaging-issue box mass
• Value mode: Foreground record (foreground_record)
• Specificity: Product-specific (product_specific)
• Normalization basis: per 1 kg net conforming product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Collected record (collected_record)
• Collection protocol: cp_assembly_records
• Sources: eu-jrc-fabricated-metal-products-2020

Waste flows

Elementary flows

Outputs

Product flows

Conforming finished product (final_product_output)

Report only conforming CPC 42915 articles or sets at the declared factory-gate state.

• Selected flow: Other articles of cutlery, manicure or pedicure sets and instruments b5ddb141-e885-4a62-98fa-8249518d609c
• Flow property / unit: Mass 93a60a56-a3c8-11da-a746-0800200b9a66 / kg
• Amount rule: Fixed output of 1 kg net conforming product, excluding packaging
• Value mode: Fixed value (fixed_value)
• Specificity: Generic (generic)
• Normalization basis: 1 kg net conforming product
• Basis kind: Reference flow (reference_flow)
• Evidence kind: Identity reference (identity_reference)
• Sources: un-cpc-3-0-2025

Waste flows

Elementary flows

7. Allocation and Co-product Handling

rule_id	Applies to	Rule	source_ids
allocation_subdivide_first	shared operations	Subdivide and use product-code meters/batch records so only attributable exchanges are assigned.	eu-pef-method-2021
allocation_physical_driver	remaining shared operations	Use a documented causal physical driver such as metered energy, treatment time or processed mass; validate it and retain sensitivity.	eu-pef-method-2021
allocation_other_relationship	no defensible physical driver	Use another relationship, including economic value only last, and disclose rejected alternatives, data and sensitivity.	eu-pef-method-2021
allocation_scrap_boundary	scrap/residues	Report factory-gate waste outputs without avoided-production credit; apply any downstream recycling model once and disclose it.	eu-pef-method-2021

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_forming_records	forming	metal, electricity, scrap	issue/return ledger; scales; submeters	product/lot; alloy; issued/returned kg; kWh; scrap kg/destination; time	Reconcile stock, scales and meters by lot	kg; kWh	lot/month	representative 12 months or complete campaign	all relevant lines	Sum included lots / net product kg	calibration; stock reconciliation; scrap tickets
cp_heat_records	heat_treatment	gas, electricity, CO2	meters; furnace logs; fuel/emission records	batch; treated kg; gas m3/conditions; kWh; carbon factor/monitored CO2; time	Dedicated meters or validated furnace driver; monitored or collected-data CO2	m3; kWh; kg	batch/month	representative 12 months or complete campaign	all relevant routes	Sum route exchanges / routed product kg	calibration; furnace log; gas specification; emission QA
cp_grinding_records	grinding_polishing	electricity, water, alumina, sludge, particulate	meters; issue ledger; manifests; air monitoring	lot; kWh; water kg; alumina issue/return; sludge/solids; particulate/fraction/compartment; time	Meter, reconcile, weigh and monitor atomic exchanges	kWh; kg	shift/lot/month	representative 12 months or complete campaign	all relevant equipment	Sum included lots / net product kg	calibration; stock record; manifest; sampling/control record
cp_surface_records	aqueous_surface	water, chemicals, wastewater, sludge	bath/issue logs; meters; analyses; manifests	product/bath; water; chemical/solution mass/concentration; wastewater volume/density; sludge/solids; route; time	Reconcile bath/chemical records; meter water/discharge; measure density/solids	kg; m3; fraction	bath/lot/month	representative 12 months or complete campaign	all on-site/outsourced routes	Assign by bath throughput or validated driver / routed product kg	calibration; certificate; bath log; analysis; manifest
cp_assembly_records	assembly_packaging	electricity, boxes, product	meter; packaging BOM/issue; final scale/inspection	lot; kWh; box code/count/unit mass; conforming/rejected kg; time	Meter, reconcile packaging and weigh net output	kWh; kg	lot/month	representative 12 months or complete campaign	all final lines	Sum / net product kg	calibration; BOM; release/lot reconciliation

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
calc_reference_normalization	all rows	normalized amount = period exchange / period net conforming mass	exchange; final mass	amount per kg
calc_electricity_mj	electricity	MJ = kWh x 3.6	kWh	MJ
calc_fossil_co2	fossil_co2_heat	Prefer quality-assured monitoring; otherwise metered fuel x documented site/period fossil-carbon factor; exclude upstream emissions	gas; factor or monitoring	direct fossil CO2
calc_solution_active_mass	acid/alkali supplementary reporting	active mass = solution mass x certified/measured fraction; inventory retains solution mass unless linked dataset requires active mass	solution mass; fraction	active mass
calc_wastewater_mass	wastewater	mass = metered volume x measured density	volume; density	kg
calc_metal_mass_balance	route	net metal input = product metal + scrap + metal in residues + WIP change; investigate residual	input; composition; scrap; residue analyses; WIP	balance/residual	eu-jrc-fabricated-metal-products-2020

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
dq_product_identity	product	Retain code, contents, mass, specification revision, alloy, performance and finish for every lot.	BOM; specification; inspection; traceability
dq_temporal	all data	Use representative 12 months, or capture all lots and disclose seasonality/abnormal events for a shorter campaign.	dated production, utility, maintenance and waste records
dq_measurement	measured rows	Use calibrated instruments; document resolution, shared-meter allocation and uncertainty.	certificates; meter map; worksheets
dq_completeness	all processes	Reconcile material, product, scrap, wastewater/residue and explain exclusions/estimates without merging atomic flows.	balance; checklist; manifests; stock reconciliation
dq_supplier_data	purchased/outsourced	Use supplier-specific or representative upstream data; disclose geography, technology, age, substitution and limits.	supplier declarations; dataset metadata; substitution log
dq_surface_chemistry	surface route	Retain chemical identity, concentration, bath make-up/discharge; never infer one chemical from a total.	SDS; certificate; bath log; purchase ledger

9. Validation Rules

rule_id	Applies to	Rule	source_ids
validate_reference_mass	reference flow	Confirm exactly 1 kg net conforming product excluding packaging and verify item/set conversion.
validate_route_consistency	process map	Include every used/outsourced process and evidence every unused conditional process.	eu-jrc-fabricated-metal-products-2020; us-epa-mpm-2003
validate_atomic_rows	inventory	Require one exchange and one property/unit per row; reject combined utilities, chemicals, packaging, wastes or emissions.
validate_uuid_semantics	UUID rows	Confirm state 100, names, type, classification, property and unit group; never replace unresolved rows with proxies.
validate_metal_balance	route	Investigate residual against uncertainty, WIP and unmeasured residues.	eu-jrc-fabricated-metal-products-2020
validate_energy_emissions	energy/CO2	Separate electricity/gas, verify conversion and ensure direct CO2 excludes upstream electricity.
validate_waste_basis	wastes	Verify destination, wet/dry basis, density/solids conversion and no wastewater/sludge/emission double count.	us-epa-mpm-2003
validate_source_period	package	Confirm sources, period, coverage, calibration, gaps and absence of unsupported external ranges.	eu-pef-method-2021

10. Published Dataset Profile

Field	Value
dataset_role	Foreground factory-gate production dataset for later review as secondary_dataset or background_dataset
downstream_use	CPC 42915 product systems with matching material, finish, technology, geography and packaging
allowed_use	Cradle-to-gate and supply-chain models; comparisons only after function, performance, life and set configuration are equivalent
excluded_use	Unlike functions/set contents; powered equipment; use-stage claims; other cutlery categories; use without unresolved-flow treatment
required_metadata	PCR/version; product/set; net mass; alloy/composition; dimensions; performance; finish; site/geography; technology; period; packaging; outsourced work; allocation; UUID status
required_quality_disclosure	Primary-data share; calibration; temporal/site coverage; supplier representativeness; balance residual; waste basis/destination; emission method; gaps/uncertainty
update_trigger	Material/product/set, technology, heat source, chemistry, site, packaging, allocation, supplier data or waste-treatment change; or more than three years since reference period

11. Data Sources

Source id	Type	Reference	Used for
un-cpc-3-0-2025	official_guidance	UNSD, 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 (accessed 2026-09-05).	CPC 42915 identity/title
china-hainan-import-tax-list-2025	official_guidance	Ministry of Finance, General Administration of Customs and State Taxation Administration, Annex: Import Taxable Goods List, 2025, p. 34. https://www.gov.cn/zhengce/zhengceku/202507/P020250723546212625804.pdf (accessed 2026-09-05).	Chinese terminology and distinction from kitchen/table ware
eu-jrc-fabricated-metal-products-2020	official_guidance	European Commission JRC, Best Environmental Management Practice in the Fabricated Metal Products sector, EUR 30025 EN, JRC119281, 2020. https://publications.jrc.ec.europa.eu/repository/bitstream/JRC119281/jrc119281_jrc_bemp_fabricated_metal_product_manufacturing_report.pdf (accessed 2026-09-05).	Process map and material/energy/water/waste relevance
us-epa-mpm-2003	official_guidance	U.S. EPA, Development Document for Metal Products & Machinery Point Source Category, EPA-821-B-03-001, 2003. https://www.epa.gov/sites/default/files/2015-11/documents/mp-m_dd_2003.pdf (accessed 2026-09-05).	Grinding, polishing, heat treatment, cleaning, wastewater/sludge
eu-pef-method-2021	official_guidance	Commission Recommendation (EU) 2021/2279, Annex I Product Environmental Footprint Method. https://eur-lex.europa.eu/eli/reco/2021/2279/2021-12-30/eng (accessed 2026-09-05).	Boundary, data quality and allocation hierarchy