Home / Standards / GB/T 20422-2006 GB/T 20422-2006 Abolished Lead-free solders 无铅钎料 Standard Type GBT ICS 25.160.50 CCS J33 Status 废止 Issue Date 2006-08-22 Implementation 2007-01-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委