Home / Standards / GB/T 34648-2017 GB/T 34648-2017 Active Metallic and other inorganic coatings—Autocatalytic nickel over autocatalytic copper for electromagnetic shielding 金属及其他无机覆盖层 电磁屏蔽用化学镀铜上化学镀镍 Standard Type GBT ICS 25.220.40 CCS A29 Status 现行 Issue Date 2017-09-29 Implementation 2018-04-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A