China National Standards

China Synthetic sapphire watch Industry Standards English PDF List

  •  China "Synthetic sapphire watch" Industry Standards English PDF List:
    • Standard  Code Standard Title Standard Class Order
    QB/T 4774-2014 Synthetic sapphire watch glasses
    合成蓝宝石手表玻璃    		 China Light Industry Standards
    Synthetic sapphire watch
    English PDF

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