美利体育登录入口官网:KS M ISO 4628-5-2017 色漆和清漆涂层劣化的评定缺陷数量、大小和外观均匀变化强度的测定第5部分:剥落程度的评定
Paints and varnishes-Evaluation of degradation of coatings- Designation of quantity and size of defects, and of intensity of uniform changes in appearance-Part 5:Assessment of degree of flaking