Home / Standards / GB/T 37999-2019 GB/T 37999-2019 Active 1,1,1,3,3-Pentafluoropropane(HFC-245fa) for industrial use 工业用1,1,1,3,3-五氟丙烷(HFC-245fa) Standard Type GBT ICS 71.080.20 CCS G17 Status 现行 Issue Date 2019-08-30 Implementation 2020-07-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A