Home / Standards / GB/T 40357-2021 GB/T 40357-2021 Active Hair products—Determination of the permeability of hairpiece to air 发制品 假发透气性的测定 Standard Type GBT ICS 59.080.99 CCS W59 Status 现行 Issue Date 2021-08-20 Implementation 2021-12-01 Responsible Dept 中国轻工业联合会 Drafting Unit N/A