General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
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GB/T 25071-2010
Scope
This standard specifies the classification and codes of materials and varieties of jewelry, jade and precious metal products. This standard applies to information processing and information exchange of jewelry, jade and precious metal products.
GB/T 25071-2010 history
2010GB/T 25071-2010 Classification and codes for products of gems and precious metals