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United Precious Metal Refining


4.8 ( 7728 ratings )
商务 工具
开发 Copeland Data Systems, Inc.
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* Check live precious metal spot prices.

* Frequently used Calculators
-- Estimate value of scrap gold and silver lots based on market price and purity.
-- Raise of lower the purity of gold
-- Ratios for producing sterling silver
-- Convert casting weights for different materials
-- Convert between Fahrenheit and Celsius
-- Convert between different units of weight