China National Standards

China Freshwater cultured pearl GB Standards List

  •  China "Freshwater cultured pearl" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 37063-2018 Freshwater cultured pearl mussels and classification of pearls
    淡水育珠品种及其珍珠分类    		 China National Standards
    Freshwater cultured pearl
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