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The Product Category Rule (PCR) Library contains approximately 100 PCRs from a variety of Environmental Product Declaration (EPD) programs and emerging carbon footprint programs. This library can be a useful and powerful tool that offers “access to many existing PCRs”

If you are new to the PCRs, check other pages: “The steps for the preparation of PCR”, “Contents of PCR”, “Procedure for development and maintenance of PCR

Some of you may consider PCR is just specific calculation rules for product categories. Originally, it was defined during the ISO 14025(Environmental Product Declaration; EPD) process. An EPD is based on a Life Cycle Assessment (LCA) in accordance with the ISO 14040 series. However, to make the results of different LCA studies comparable, they must have the same goal and scope, calculation rules and format for its disclosure.
Product categories usually differ in their environmental performance. This must be reflected in the selection of calculation rules; system boundaries, cut-off rules, other specific rules and appropriate indicators. For this goal, PCR needs to be developed.

Recently carbon footprint declaration/label is increasingly gaining international attention. Carbon footprint of product (CFP) is the overall amount of carbon dioxide (CO2) and other greenhouse gas (GHG) emissions related to a product, along its product life cycle. The carbon footprint is quantified using indicators such as the Global Warming Potential (GWP). In other words, carbon footprint declaration/label can be derived from Type III environmental declarations. In that sense, carbon footprint analysis is not a new analysis methodology. Methodological framework is based on Environmental Labeling and Declaration - ISO 14025 and ISO14020 series, in addition to ISO 14040/14044 (Life cycle assessment).

According to ISO/WD3 14067(Carbon footprint of products), the Standard provides for the adoption of product category rules (PCR), where they have been developed in accordance with ISO14025 and are consistent with Part 1 and 2 of this International Standard

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Agriculture
forestry and fishery products food products, textiles




Services


Building materials/ Kitchenware




People's livelihood/ Textiles




Electronics

Transportable goods
except metal products, machinery and equipment




Machinery and equipment

Utility
electricity, gas and water




Metal products

Petrochemical




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