Home / Standards / GB/T 42270-2022 GB/T 42270-2022 Active Test methods of hydrophobic characteristics for porous hydrophobic membrane 多孔疏水膜的疏水性能测试方法 Standard Type GBT ICS 71.040.99 CCS J77 Status 现行 Issue Date 2022-12-30 Implementation 2023-04-01 Responsible Dept 国家标准委 Drafting Unit N/A