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
铜片，镀
用瑞士纯
，西德
及化工原料等等。
,含Copper plates are imported from Japan,pure silver ingots for plating from Switzerland,and argentic salt and other chemicals from Germany.
采用日本进口铜片，镀用瑞士纯，西德及化工原料等等。
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