Home / Standards / GB/T 25808-2010 GB/T 25808-2010 Abolished Sulphur black 2BR、3B 200% 硫化黑2BR、3B 200% Standard Type GBT ICS 71.100.01 CCS G57 Status 废止 Issue Date 2010-12-23 Implementation 2011-10-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A