prEN ISO 22526-2:2021 塑料 生物基塑料的碳足迹和环境足迹 第2部分:材料碳足迹、从空气中去除并掺入聚合物分子中的 CO2 量(质量)(ISO 22526-2:2020)
Plastics - Carbon and environmental footprint of biobased plastics - Part 2: Material carbon footprint, amount (mass) of CO2 removed from the air and incorporated into polymer molecule (ISO 22526-2:2020)