China 'GB/T 20503-2006
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 20503-2006
Anodizing of aluminium and its alloys - Measurement of specular reflectance and specular gloss at angles of 20°,45°,60°or 85° 铝及铝合金阳极氧化 阳极氧化膜镜面反射率和镜面光泽度的测定 20°、45°、60°、85°角度方向
Issued Date:2006-09-26
Implemented Date:2007-02-01
Issued by:
The Standardization Administration of the People's Republic of China