Home / Standards / GB/T 24776-2009 GB/T 24776-2009 Active Grouping and read-across methods of chemicals 化学物质分组和交叉参照法 Standard Type GBT ICS N/A CCS A80 Status 现行 Issue Date 2009-12-15 Implementation 2010-07-01 Responsible Dept 国家标准委 Drafting Unit N/A