Home / Standards / GB/T 2600-2009 GB/T 2600-2009 Active Coking xylenol 焦化二甲酚 Standard Type GBT ICS 71.080.15 CCS G18 Status 现行 Issue Date 2009-07-08 Implementation 2010-04-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委