Home / Standards / GB/T 34498-2017 GB/T 34498-2017 Active Tungsten cathode materials for laser lamps 激光灯用钨阴极材料 Standard Type GBT ICS 77.150.99 CCS H63 Status 现行 Issue Date 2017-10-14 Implementation 2018-05-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A