Home / Standards / GB/T 34241-2017 GB/T 34241-2017 Active Spiral wound composite polyamide reverse osmosis membrane element 卷式聚酰胺复合反渗透膜元件 Standard Type GBT ICS 07.060;23.100.60 CCS J77 Status 现行 Issue Date 2017-09-07 Implementation 2018-04-01 Responsible Dept 国家标准委 Drafting Unit N/A