Home / Standards / GB/T 1543-2005 GB/T 1543-2005 Active Paper and board-Determination of Opacity(paper backing)-Diffuse reflectance method 纸和纸板 不透明度(纸背衬)的测定(漫反射法) Standard Type GBT ICS 85.060 CCS Y30 Status 现行 Issue Date 2005-09-26 Implementation 2006-04-01 Responsible Dept 中国轻工业联合会 Drafting Unit 中国轻工业联合会