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Tolerances for Quality Measurement of Precious Metal Jewelry
Tolerances for Quality Measurement of Precious Metal Jewelry, Total:2 items.
In the international standard classification, Tolerances for Quality Measurement of Precious Metal Jewelry involves: Jewellery.
Professional Standard - Light Industry, Tolerances for Quality Measurement of Precious Metal Jewelry
- QB/T 1690-2004 Provision of permissible errors for measurement of precious metals adornment mass
工业和信息化部, Tolerances for Quality Measurement of Precious Metal Jewelry
- QB/T 1690-2021 Regulations on tolerances for quality measurement of precious metal jewelry