People began to "deposit" coins, as well as gold or silver bullion, into institutions for safekeeping. 于是人们出于安全考虑开始把金币和金条银条存在某个机构里。
Copper plates are imported from Japan,pure silver ingots for plating from Switzerland,and argentic salt and other chemicals from Germany. 采用日本进口的铜片，镀银用的瑞士纯银条，西德的银监及化工原料等等。
