Home / Standards / GB/T 23855-2018 GB/T 23855-2018 Active Liquid sulphur trioxide 液体三氧化硫 Standard Type GBT ICS 71.060.30 CCS G11 Status 现行 Issue Date 2018-02-06 Implementation 2018-09-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A