Copper plates are imported from Japan,pure silver ingots for plating from Switzerland,and argentic salt and other chemicals from Germany.
采用日
进口的
片，镀银用的瑞士纯银条，西德的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.
采用日进口的片，镀银用的瑞士纯银条，西德的银监及化工原料等等。
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