Zhongshan jia rui te noble metal ma
Sell master alloy for goldsmith's master alloy for silversmith's 925 silver alloy white gold alloy yellow gold alloy red gold alloy brass
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Master alloy for white (gwn30)-
Master alloys for 925 silver (gst44)
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Master alloys for 925 silver (gstp5)
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Master alloys for red gold (grs02f)
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Master alloys for white gold (gwn15b)
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