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China GB Standards List

 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

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