Home / Standards / GB/T 23981.1-2019 GB/T 23981.1-2019 Active 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 Standard Type GBT ICS 87.040 CCS G50 Status 现行 Issue Date 2019-03-25 Implementation 2020-02-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A