Home / Standards / GB/T 21199-2007 GB/T 21199-2007 Abolished Dry mono component toner for laser printer 激光打印机干式单组份显影剂 Standard Type GBT ICS 37.100.20 CCS N40 Status 废止 Issue Date 2007-11-14 Implementation 2008-04-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A