WJ 1590-1984 Camera Surface Finishing Appearance Classification of Camera Plating (Cladding) Layers and Technical Requirements for Substrate Surface (English Version)
Professional Standard - Military and Civilian Products
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WJ 1590-1984
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1984WJ 1590-1984 Camera Surface Finishing Appearance Classification of Camera Plating (Cladding) Layers and Technical Requirements for Substrate Surface