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
片，镀银用瑞士纯银条，西德银监及化
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.
采用日本进片，镀银用瑞士纯银条，西德银监及化原料等等。
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