GB/T 30789.1-2015
色漆和清漆 涂层老化的评价 缺陷的数量和大小以及外观均匀变化程度的标识 第1部分:总则和标识体系
Paints and varnishes.Evaluation of degradation of coatings.Designation of quantity and size of defects ,and of intensity of uniform changes in appearance.Part 1:General introduction and designation system
GBT30789.1-2015, GB30789.1-2015