China 'GB/T 30789.7-2015
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 30789.7-2015
Paints and varnishes—Evaluation of degradation of coatings—Designation of quantity and size of defects,and of intensity of uniform changes in appearance—Part 7: Assessment of degree of chalking by velvet method 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7部分:天鹅绒布法评定粉化等级
Issued Date:2015-05-15
Implemented Date:2015-10-01
Issued by:
The Standardization Administration of the People's Republic of China