Copper plates are imported from Japan,pure silver ingots for plating from Switzerland,and argentic salt and other chemicals from Germany.
采用日本进口
，镀银用瑞士纯银条，西德银监及化工原料等等。
板Copper plates are imported from Japan,pure silver ingots for plating from Switzerland,and argentic salt and other chemicals from Germany.
采用日本进口，镀银用瑞士纯银条，西德银监及化工原料等等。
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