Home / Standards / GB/T 3494-2012 GB/T 3494-2012 Active Zinc oxide produced by direct method 直接法氧化锌 Standard Type GBT ICS 77.150.60 CCS H60 Status 现行 Issue Date 2012-12-31 Implementation 2013-10-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A