China National Standards

China Porosity testing Industry Standards English PDF List

  •  China "Porosity testing" Industry Standards English PDF List:
    • Standard  Code Standard Title Standard Class Order
    QB/T 3823-1999 Porosity testing method of the metal deposits for the light industrial products
    轻工产品金属镀层的孔隙率测试方法    		 China Light Industry Standards
    Porosity testing
    English PDF

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