T/ZGZS 0505—2023

The purpose of this document is to provide a scientifically sound accounting method for calculating the carbon footprint of recycled cotton yarn products in China. Its significance lies in standardizing the carbon footprint accounting method for recycled cotton yarn products, establishing a lifecycle system boundary suitable for Chinese recycled cotton yarn products, promoting the widespread use of recycled cotton yarn products, and providing a basis for carbon footprint accounting and carbon label certification of recycled cotton yarn products in China.

This document specifies the terminology and definitions, accounting principles, accounting methods, data quality requirements, reporting content, and validity period of the carbon footprint accounting for recycled cotton yarn products.

This document is applicable to the carbon footprint accounting and reporting of recycled cotton yarn products produced using ring spinning machines, but it does not apply to specialty recycled cotton yarn products.