Home / Standards / GB/T 20422-2018 GB/T 20422-2018 Active Lead-free solders 无铅钎料 Standard Type GBT ICS 25.160.50 CCS J33 Status 现行 Issue Date 2018-05-14 Implementation 2018-12-01 Responsible Dept 国家标准委 Drafting Unit N/A