Home / Standards / GB/T 31425-2015 GB/T 31425-2015 Active Specifications for determinator of sulfur by coulometric titration 库仑测硫仪技术条件 Standard Type GBT ICS 73.040 CCS D21 Status 现行 Issue Date 2015-05-15 Implementation 2015-07-01 Responsible Dept 中国煤炭工业协会 Drafting Unit N/A