真的是純銀也不怕火煉.mp4

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Uploaded by on Apr 22, 2010

俗話說真金不怕火煉 事實上純度夠的銀也依樣不怕火煉
市面上許多飾品多為廉價合金製造多含鉛錫鎳等重金屬長期接觸恐造成身體的傷害或過敏等症狀不可不慎
何為真正的純銀請看影片 用火燒到紅 冷卻後依然一片銀白

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