BS EN ISO 4628-7-2016 涂料和清漆.漆膜降解的评定.缺陷的量值和大小以及外观均匀变化强度的规定.用丝绒法评定粉化等级
Paints and varnishes. Evaluation of degradation of coatings. Designation of quantity and size of defects, and of intensity of uniform changes in appearance. Assessment of degree of chalking by velvet method