Home / Standards / GB/T 39807-2021 GB/T 39807-2021 Active Process specifications of Pb-free plating tin and tin alloys 无铅电镀锡及锡合金工艺规范 Standard Type GBT ICS 25.220.40 CCS A29 Status 现行 Issue Date 2021-03-09 Implementation 2021-10-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A