China National Standards

China Gem grade synthetic Industry Standards English PDF List

  •  China "Gem grade synthetic" Industry Standards English PDF List:
    • Standard  Code Standard Title Standard Class Order
    JC/T 817-2014 Gem grade synthetic cubic zirconia crystals
    宝石级合成立方氧化锆晶体    		 China Building Materials Standards
    Gem grade synthetic
    English PDF

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