Home / Standards / GB/T 3676-2020 GB/T 3676-2020 Active Maleic anhydride for industrial use 工业用顺丁烯二酸酐 Standard Type GBT ICS 71.080.50 CCS G16 Status 现行 Issue Date 2020-03-31 Implementation 2021-02-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A