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贵金属覆盖层饰品 电镀通用技术条件
Precious metal alloy coatings jewellery--General technical requirements of plating
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贵金属覆盖层饰品 装配通用技术条件
Precious metal alloy coatings jewellery--General technical requirements of assembly
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贵金属覆盖层饰品 铸造通用技术条件
Precious metal alloy coatings jewellery--General technical requirements of casting
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铜锡合金覆盖层饰品
Jewellery with Cu-Sn alloy coating
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饰品 标识
Ornament--Marking
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千足金镶嵌首饰 镶嵌牢度
999‰ gold alloy inlay jewellery.Inlay fastness
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彩色钻石颜色分级
Color grading of fancy colored diamond
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贵金属艺雕复镶首饰
Precious metals mulit inlaid jewelry with fine art carving
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首饰精密加工石膏模具 焙烧安全技术规范
Precision machining gypsum mould for jewellery-Safety technical regulations for roasting
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首饰精密加工石膏模具
Precision machining gypsum mold for jewellery
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