Home / Standards / GB/T 31729-2015 GB/T 31729-2015 Active Test method for mass per unit area of plastic film 塑料薄膜单位面积质量试验方法 Standard Type GBT ICS 83.140.10 CCS G33 Status 现行 Issue Date 2015-06-02 Implementation 2016-01-01 Responsible Dept 中国轻工业联合会 Drafting Unit N/A