TianGong PCR

Parts for the goods of subclasses 47221 to 47223

Parts for the goods of subclasses 47221 to 47223: This PCR describes factory-gate production of a separately supplied, finished part designed for a telephone set or…

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  • Warnings methodology_not_reviewed Authored methodology is candidate guidance and still requires methodology review.

Classification mapping

CPC 3.0:47401 · exact

Source

1. Scope and Applicability

This PCR describes factory-gate production of a separately supplied, finished part designed for a telephone set or communication apparatus in the CPC 47221–47223 host set. A concrete data package must name the part, compatible host, technology and production route. The category flow is a mass reporting identity, not permission to compare unlike parts by mass alone. Production of a complete telephone, router or base station is outside this part-level reference. [un-cpc-3-2025; itu-l1410-2024]

2. Product Category Identity

FieldValue
canonical_pcr_idpcr.metal-products-machinery-and-equipment.radio-television-and-communication-equipment-and-apparatus.parts-for-the-goods-of-subclasses-47221-to-47223
classification_refsCPC 3.0 47401, parts for goods of subclasses 47221 to 47223
covered_productsSeparately supplied dedicated finished parts of the specified host goods, including populated boards and fabricated mechanical parts when sold as those parts
excluded_productsComplete host equipment; raw unpopulated printed circuits, standalone ICs, unshaped sheet and packaging sold as their own products
representative_productA populated communication-apparatus board module supplied as a replacement part; other dedicated part routes remain eligible when declared
production_routeDeclare the actual on-site route; board population and sheet fabrication rows apply only when those operations occur
market_stateAccepted, functional, separately supplied part at the factory gate, before transport use or end of life

3. Reference Flow

FieldValue
WhatA declared dedicated part that performs a specified function in a compatible telephone or communications apparatus
How much1 kg net mass of accepted finished parts of one declared part specification
How wellPass the declared inspection and compatibility specification; disclose part type, materials and performance criteria
How long or cycleOne completed production lot to the factory gate; service lifetime and use are not modeled
reference_flow_linkfinished_part
FieldValue
Reference amount1
Reference product flowParts for the goods of subclasses 47221 to 47223 bf7766aa-8f63-4869-bd70-2090483f4437
Reference flow propertyMass 93a60a56-a3c8-11da-a746-0800200b9a66
Reference unit groupUnits of mass 93a60a57-a4c8-11da-a746-0800200c9a66
Reference unitkg
Required qualifierspart type and part number; compatible host subclass and model; accepted functional specification; material composition; manufacturing route; production geography and period; packaging exclusion from net mass

A mass result is comparable only for parts with equivalent function, quality and boundary. The producer measures accepted net output mass for the same lot used by all inventory protocols. [itu-l1410-2024]

4. Measurement and Unit Rules

rule_idApplies toRequired propertyRequired unitRule
reference_massreference productMass 93a60a56-a3c8-11da-a746-0800200b9a66kgWeigh accepted finished parts on a calibrated scale after inspection and before transport packaging; exclude rejected units and the corrugated box. Collect using cp_finished_mass.
inventory_basisall inventory rowsPhysical flow property of each selected flowrow unitRecord attributable lot quantities per 1 kg reference flow using the same accepted net output mass and production period; preserve board area in m2, material masses in kg and electricity in kWh.

5. System Boundary

Cradle-to-gate accounting includes upstream datasets for purchased boards, ICs, solder paste, aluminium sheet, electricity and packaging, plus the declared on-site fabrication, assembly, testing and packing operations. Exclude host-device assembly after the part leaves the gate, distribution, use and end-of-life from this part dataset. Disclose any externally performed process as an upstream dataset. [itu-l1410-2024]

Boundary Abstraction

FieldValue
declared_starting_conditionPurchased materials and components at the part producer gate, with supplier production represented upstream
starting_condition_roleExplicit foreground inputs with linked upstream datasets
product_classification_scopeDedicated separately supplied parts for host goods 47221, 47222 and 47223
recursive_input_ruleRecord a purchased same-category part as a distinct input with its own upstream dataset and stop tracing at that declared supplier boundary; do not silently merge it into the reference output
upstream_dataset_requirementUse composition- and geography-matched supplier datasets where available; disclose missing upstream processes and proxy limits
disclosureReport part identity, route, supplier boundary, included stages, exclusions and all deviations
rule_idapplies_torulesource_ids
boundary_gateforeground part productionInclude applicable on-site fabrication, module assembly, testing and packing until acceptance at factory gate; disclose route-specific omissions.itu-l1410-2024
boundary_supplierpurchased component inputsKeep purchased-component upstream burdens and process boundary explicit; avoid double counting a supplier stage as on-site fabrication.itu-l1410-2024

6. Process Inventory Structure

The cards below specify atomic exchanges for the common board-module and aluminium-sheet routes. Apply each card only when its stated physical operation occurs. A different part technology must disclose its own atomic exchanges and seek method review before treating this list as complete. [itu-l1410-2024]

Process Map

process_idprocess_nameinclusioninclusion_conditionrolequantitative_reference
part_manufacturingPart fabrication, module assembly, testing and packingrequiredDeclare which of board population, sheet fabrication and packing actually occur; each conditional card follows that routeforeground production of one accepted part typeper 1 kg accepted finished part

Process: Part manufacturing (part_manufacturing)

Inputs

Product flows
Bare printed circuit board input (bare_pcb)

Include only when the producer populates a bare board for the declared communication part. Record the purchased board area and supplier technology; its upstream fabrication remains in the supplier dataset.

  • Selected flow: Fabricated bare PCB board 6f07dbee-0861-42d0-a644-f84a667933a9

  • Flow property / unit: Area / m2

  • Amount rule: Measured board area attributable to accepted output, per 1 kg reference flow.

  • Value mode: Foreground record (foreground_record)

  • Specificity: Site-specific (site_specific)

  • Normalization basis: per 1 kg reference flow

  • Basis kind: Reference flow (reference_flow)

  • Evidence kind: Collected record (collected_record)

  • Collection protocol: cp_bare_pcb

  • Sources: itu-l1410-2024

Packaged integrated circuit input (packaged_ic)

Include when packaged ICs are mounted on the part; reconcile masses and part numbers with the bill of materials. Do not count bare die fabrication as an on-site process when ICs are purchased.

  • Selected flow: Packaged integrated circuits b6eb5862-9b77-4f3a-8e0d-1eea7f0ac8bb

  • Flow property / unit: Mass / kg

  • Amount rule: Measured purchased IC mass consumed per 1 kg reference flow.

  • Value mode: Foreground record (foreground_record)

  • Specificity: Site-specific (site_specific)

  • Normalization basis: per 1 kg reference flow

  • Basis kind: Reference flow (reference_flow)

  • Evidence kind: Collected record (collected_record)

  • Collection protocol: cp_packaged_ic

  • Sources: itu-l1410-2024

Solder paste input (solder_paste)

Include only for an on-site solder-paste deposition route. Declare alloy and flux formulation; the database identity does not establish lead-free composition.

  • Selected flow: Solder paste 13b90193-c692-4fce-a8d6-a20554776710

  • Flow property / unit: Mass / kg

  • Amount rule: Measured paste consumed per 1 kg reference flow.

  • Value mode: Foreground record (foreground_record)

  • Specificity: Site-specific (site_specific)

  • Normalization basis: per 1 kg reference flow

  • Basis kind: Reference flow (reference_flow)

  • Evidence kind: Collected record (collected_record)

  • Collection protocol: cp_solder_paste

  • Sources: itu-l1410-2024

Aluminium sheet input (aluminium_sheet)

Include only for a part formed or cut from aluminium sheet at the foreground site. Declare grade, recycled content and actual fabrication route; this generic flow does not establish primary-metal origin.

  • Selected flow: aluminium sheet 4f197be4-7b3b-11dd-ad8b-0800200c9a66

  • Flow property / unit: Mass / kg

  • Amount rule: Measured aluminium sheet consumption per 1 kg reference flow.

  • Value mode: Foreground record (foreground_record)

  • Specificity: Site-specific (site_specific)

  • Normalization basis: per 1 kg reference flow

  • Basis kind: Reference flow (reference_flow)

  • Evidence kind: Collected record (collected_record)

  • Collection protocol: cp_aluminium_sheet

  • Sources: itu-l1410-2024

Purchased AC electricity (electricity)

Record electricity consumed by the declared on-site part fabrication, assembly, testing and packing activities. The public candidate records cannot uniquely establish the grid-supply identity; resolve the flow before dataset publication.

  • Selected flow: Grid-supplied alternating-current electricity

  • Flow property / unit: Energy / kWh

  • Amount rule: Metered attributable electricity per 1 kg reference flow.

  • Value mode: Foreground record (foreground_record)

  • Specificity: Site-specific (site_specific)

  • Normalization basis: per 1 kg reference flow

  • Basis kind: Reference flow (reference_flow)

  • Evidence kind: Collected record (collected_record)

  • Collection protocol: cp_electricity

  • Sources: itu-l1410-2024

Corrugated board shipping box input (corrugated_box)

Include when the accepted part is supplied in a corrugated board box. The box is an input to gate-ready packing and is excluded from the net reference-product mass.

  • Selected flow: corrugated board boxes 4f197bec-7b3b-11dd-ad8b-0800200c9a66

  • Flow property / unit: Mass / kg

  • Amount rule: Measured box mass attributable to accepted output per 1 kg reference flow.

  • Value mode: Foreground record (foreground_record)

  • Specificity: Site-specific (site_specific)

  • Normalization basis: per 1 kg reference flow

  • Basis kind: Reference flow (reference_flow)

  • Evidence kind: Collected record (collected_record)

  • Collection protocol: cp_corrugated_box

  • Sources: itu-l1410-2024

Waste flows
Elementary flows

Outputs

Product flows
Accepted finished communication-equipment part (finished_part)

One declared part type and host compatibility, accepted after inspection at the factory gate. Its net mass excludes the shipping box and rejects.

  • Selected flow: Parts for the goods of subclasses 47221 to 47223 bf7766aa-8f63-4869-bd70-2090483f4437

  • Flow property / unit: Mass / kg

  • Amount rule: 1 kg

  • Value mode: Foreground record (foreground_record)

  • Specificity: Site-specific (site_specific)

  • Normalization basis: per 1 kg reference flow

  • Basis kind: Reference flow (reference_flow)

  • Evidence kind: Collected record (collected_record)

  • Collection protocol: cp_finished_mass

  • Sources: un-cpc-3-2025

Waste flows
Rejected populated board waste (rejected_pcba)

Include only when assembled boards fail inspection and leave the foreground as segregated populated-board waste. Record destination and do not treat this waste as accepted product.

  • Selected flow: Waste populated printed wiring board eb5ffe4a-49af-450c-9a31-3efdfd343f8a

  • Flow property / unit: Mass / kg

  • Amount rule: Measured rejected populated-board mass per 1 kg reference flow.

  • Value mode: Foreground record (foreground_record)

  • Specificity: Site-specific (site_specific)

  • Normalization basis: per 1 kg reference flow

  • Basis kind: Reference flow (reference_flow)

  • Evidence kind: Collected record (collected_record)

  • Collection protocol: cp_rejected_pcba

  • Sources: itu-l1410-2024

Segregated aluminium cutting scrap (aluminium_scrap)

Include only when aluminium-sheet cutting produces separately collected aluminium scrap. Record recycling or disposal destination without a credit in this foreground inventory.

  • Selected flow: Aluminium Scrap 96c5f842-ea53-419b-b1cd-c02c479efb45

  • Flow property / unit: Mass / kg

  • Amount rule: Measured aluminium scrap mass per 1 kg reference flow.

  • Value mode: Foreground record (foreground_record)

  • Specificity: Site-specific (site_specific)

  • Normalization basis: per 1 kg reference flow

  • Basis kind: Reference flow (reference_flow)

  • Evidence kind: Collected record (collected_record)

  • Collection protocol: cp_aluminium_scrap

  • Sources: itu-l1410-2024

Elementary flows

7. Allocation and Co-product Handling

rule_idapplies_torulesource_ids
allocate_subdivideshared lines and co-productsSubdivide metered processes and assign direct input and waste records to the declared part first.itu-l1410-2024; eu-pef-2021-2279
allocate_physicalshared facility dataWhen subdivision is unavailable, use a demonstrated physical driver relevant to the process: board area for PCB operations, good die area for IC production, or mass for other parts. Record driver, totals and sensitivity.itu-l1410-2024; eu-pef-2021-2279
allocate_economicshared facility data without a defensible physical driverUse economic allocation only if physical data are insufficient; report price basis, period and sensitivity. Do not grant an automatic recycling credit to aluminium scrap.itu-l1410-2024; eu-pef-2021-2279

8. Foreground Data Collection, Calculation, and Quality Rules

Data Collection Protocols

protocol_idprocess_idflow_rolerecord_typeraw_fieldscollection_methodunitfrequencytemporal_coveragesite_scopeaggregation_rulequality_evidence
cp_bare_pcbpart_manufacturingbare_pcblot ledger and calibrated meter or scalelot ID; part number; accepted net output kg; attributable bare printed circuit board input quantityMeasure or reconcile bare printed circuit board input for the same accepted lot; record route applicability and supplier or waste destination.m2each lotdeclared production perioddeclared facilityper 1 kg reference flowmeter or scale calibration; purchase and production ledger; acceptance and mass-balance record
cp_packaged_icpart_manufacturingpackaged_iclot ledger and calibrated meter or scalelot ID; part number; accepted net output kg; attributable packaged integrated circuit input quantityMeasure or reconcile packaged integrated circuit input for the same accepted lot; record route applicability and supplier or waste destination.kgeach lotdeclared production perioddeclared facilityper 1 kg reference flowmeter or scale calibration; purchase and production ledger; acceptance and mass-balance record
cp_solder_pastepart_manufacturingsolder_pastelot ledger and calibrated meter or scalelot ID; part number; accepted net output kg; attributable solder paste input quantityMeasure or reconcile solder paste input for the same accepted lot; record route applicability and supplier or waste destination.kgeach lotdeclared production perioddeclared facilityper 1 kg reference flowmeter or scale calibration; purchase and production ledger; acceptance and mass-balance record
cp_aluminium_sheetpart_manufacturingaluminium_sheetlot ledger and calibrated meter or scalelot ID; part number; accepted net output kg; attributable aluminium sheet input quantityMeasure or reconcile aluminium sheet input for the same accepted lot; record route applicability and supplier or waste destination.kgeach lotdeclared production perioddeclared facilityper 1 kg reference flowmeter or scale calibration; purchase and production ledger; acceptance and mass-balance record
cp_electricitypart_manufacturingelectricitylot ledger and calibrated meter or scalelot ID; part number; accepted net output kg; attributable purchased ac electricity quantityMeasure or reconcile purchased ac electricity for the same accepted lot; record route applicability and supplier or waste destination.kWheach lotdeclared production perioddeclared facilityper 1 kg reference flowmeter or scale calibration; purchase and production ledger; acceptance and mass-balance record
cp_corrugated_boxpart_manufacturingcorrugated_boxlot ledger and calibrated meter or scalelot ID; part number; accepted net output kg; attributable corrugated board shipping box input quantityMeasure or reconcile corrugated board shipping box input for the same accepted lot; record route applicability and supplier or waste destination.kgeach lotdeclared production perioddeclared facilityper 1 kg reference flowmeter or scale calibration; purchase and production ledger; acceptance and mass-balance record
cp_finished_masspart_manufacturingfinished_partlot ledger and calibrated meter or scalelot ID; part number; accepted net output kg; attributable accepted finished communication-equipment part quantityMeasure or reconcile accepted finished communication-equipment part for the same accepted lot; record route applicability and supplier or waste destination.kgeach lotdeclared production perioddeclared facilityper 1 kg reference flowmeter or scale calibration; purchase and production ledger; acceptance and mass-balance record
cp_rejected_pcbapart_manufacturingrejected_pcbalot ledger and calibrated meter or scalelot ID; part number; accepted net output kg; attributable rejected populated board waste quantityMeasure or reconcile rejected populated board waste for the same accepted lot; record route applicability and supplier or waste destination.kgeach lotdeclared production perioddeclared facilityper 1 kg reference flowmeter or scale calibration; purchase and production ledger; acceptance and mass-balance record
cp_aluminium_scrappart_manufacturingaluminium_scraplot ledger and calibrated meter or scalelot ID; part number; accepted net output kg; attributable segregated aluminium cutting scrap quantityMeasure or reconcile segregated aluminium cutting scrap for the same accepted lot; record route applicability and supplier or waste destination.kgeach lotdeclared production perioddeclared facilityper 1 kg reference flowmeter or scale calibration; purchase and production ledger; acceptance and mass-balance record

Calculation Rules

rule_idApplies toFormula or ruleInputsOutputsource_ids
lot_mass_balancefinished_part and material lossesCheck that accepted output plus separated scrap is physically plausible against measured material inputs; explain non-recovered losses without inventing a yield factor.accepted output; material inputs; scrap recordsmass-balance reviewitu-l1410-2024

Data Quality Requirements

requirement_idApplies toRequirementEvidence
dq_identityall inventory rowsUse the same part number, host compatibility, route and lot across inputs, outputs and reference flow.bill of materials; inspection record
dq_temporalall collection protocolsUse one disclosed production period and site; record any estimated or missing meter share.dated ledgers; meter and allocation records
dq_completenessapplicable route cardsAccount for applicable materials, power and wastes; add separate atomic records for other actual exchanges and explain omissions.process map; mass balance; waste transfer records
dq_electricityelectricityResolve a unique public product flow and a geography-matched upstream electricity dataset before publishing a data package.task-bound flow audit; meter; supplier dataset

9. Validation Rules

rule_idapplies_torulesource_ids
validate_identityreference flow and finished_partRequire part/host compatibility, exact CPC 47401 product-flow UUID, 1 kg accepted net mass and exclusion of packaging from net product mass.un-cpc-3-2025; itu-l1410-2024
validate_routeall inventory rowsRequire route-specific inclusion conditions, atomic selected flows, lot records and reconciliation of accepted output, rejects and material inputs.itu-l1410-2024
validate_unresolvedelectricityBlock publication of a foreground data package until a unique public electricity flow is audited; retain measured activity without choosing an ambiguous UUID.itu-l1410-2024

10. Published Dataset Profile

FieldValue
dataset_roleforeground product production dataset for one declared part specification
downstream_usesecondary_dataset; background_dataset
allowed_useModel the production of the declared dedicated part as an input to a host-device LCA when specifications and boundary match
excluded_useDo not substitute for a complete phone or network device, compare unlike part functions by mass, or claim use/end-of-life impacts
required_metadatapart number; host compatibility; production geography, year and technology; bill of materials; accepted net mass; route and supplier boundary; allocation driver
required_quality_disclosureunresolved electricity UUID; missing upstream data; conditional route omissions; meter allocation; scrap destination; source limitations
update_triggerpart design, material composition, route, supplier mix, electricity identity or production period changes materially

11. Data Sources

Source idTypeReferenceUsed for
un-cpc-3-2025official_guidanceUNSD, CPC Version 3.0 Structure, 30 June 2025, https://unstats.un.org/unsd/classifications/Econ/Download/In%20Text/CPC_Ver_3.0_Structure_30Jun2025.csvCPC identity and host subclasses
itu-l1410-2024standardITU-T Recommendation L.1410 (11/2024), https://www.itu.int/rec/dologin_pub.asp?id=T-REC-L.1410-202411-I%21%21PDF-E&lang=s&type=itemsICT parts, functional unit, process map, physical facility allocation
eu-pef-2021-2279official_guidanceCommission Recommendation (EU) 2021/2279, Annex I section 4.5, https://environment.ec.europa.eu/document/download/680503dc-5a19-4f6a-bb92-84d9bfc8f312_en?filename=Annexes+1+to+2.pdfmultifunctional process allocation hierarchy

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System boundary rules · 3
Rule IDApplies toRuleSource IDs
system_boundary_rule_1foreground_system_boundaryCradle-to-gate accounting includes upstream datasets for purchased boards, ICs, solder paste, aluminium sheet, electricity and packaging, plus the declared on-site fabrication, assembly, testing and packing operations. Exclude host-device assembly after the part leaves the gate, distribution, use and end-of-life from this part dataset. Disclose any externally performed process as an upstream dataset. [itu-l1410-2024]
boundary_gateforeground part productionInclude applicable on-site fabrication, module assembly, testing and packing until acceptance at factory gate; disclose route-specific omissions.itu-l1410-2024
boundary_supplierpurchased component inputsKeep purchased-component upstream burdens and process boundary explicit; avoid double counting a supplier stage as on-site fabrication.itu-l1410-2024
Allocation rules · 3
Rule IDApplies toRuleSource IDs
allocate_subdivideshared lines and co-productsSubdivide metered processes and assign direct input and waste records to the declared part first.itu-l1410-2024, eu-pef-2021-2279
allocate_physicalshared facility dataWhen subdivision is unavailable, use a demonstrated physical driver relevant to the process: board area for PCB operations, good die area for IC production, or mass for other parts. Record driver, totals and sensitivity.itu-l1410-2024, eu-pef-2021-2279
allocate_economicshared facility data without a defensible physical driverUse economic allocation only if physical data are insufficient; report price basis, period and sensitivity. Do not grant an automatic recycling credit to aluminium scrap.itu-l1410-2024, eu-pef-2021-2279
Validation rules · 3
Rule IDApplies toRuleSource IDs
validate_identityreference flow and finished_partRequire part/host compatibility, exact CPC 47401 product-flow UUID, 1 kg accepted net mass and exclusion of packaging from net product mass.un-cpc-3-2025, itu-l1410-2024
validate_routeall inventory rowsRequire route-specific inclusion conditions, atomic selected flows, lot records and reconciliation of accepted output, rejects and material inputs.itu-l1410-2024
validate_unresolvedelectricityBlock publication of a foreground data package until a unique public electricity flow is audited; retain measured activity without choosing an ambiguous UUID.itu-l1410-2024
Processes and inputs/outputs · 1
Process IDProcess nameInput flowsOutput flows
part_manufacturingPart fabrication, module assembly, testing and packing63

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