China Gold jewellery alloy GB Standards Search Result |
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GB/T 28016-2011 Gold alloy jewellery - Determination of gold - Gravimetric method 金合金首饰 金含量的测定 重量法 - 英文版 |
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GB/T 9288-2006 Gold jewellery alloys - Determination of gold - Cupellation method (fire assay) 金合金首饰 金含量的测定 灰吹法(火试金法) - 英文版 |
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