DIN EN ISO 7668:2017-08
Отменен
Anodizing of aluminium and its alloys - Measurement of specular reflectance and specular gloss of anodic oxidation coatings at angles of 20 degrees, 45 degrees, 60 degrees or 85 degrees (ISO/DIS 7668:2017); German and English version prEN ISO 7668:2017
