China 'GB/T 23981.1-2019
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 23981.1-2019
Paints and varnishes—Determination of hiding power—Part 1: Determination of contrast ratio of white and light coloured paints 色漆和清漆 遮盖力的测定 第1部分:白色和浅色漆对比率的测定
Issued Date:2019
Implemented Date:2020-2-1
Issued by:
The Standardization Administration of the People's Republic of China