
Watch-cases And Accessories - Gold Alloy Coverings - Part 2: Determination Of Fineness, Thickness, Corrosion Resistance And Adhesion
出版:International Organization for Standardization

專家解讀視頻
Watch-cases And Accessories - Gold Alloy Coverings - Part 2: Determination Of Fineness, Thickness, Corrosion Resistance And Adhesion
出版:International Organization for Standardization
專家解讀視頻