Home / Standards / GB/T 4104-2003 GB/T 4104-2003 Abolished Leucoscopic method for testing whiteness of zinc oxide made by direct process 直接法氧化锌白度(颜色)检验方法 Standard Type GBT ICS 71.060.30 CCS H21 Status 废止 Issue Date 2003-11-03 Implementation 2004-05-01 Responsible Dept 中国有色金属工业协会 Drafting Unit 中国有色金属工业协会