China National Standards

China smeltery GB Standards List

  •  China "smeltery" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB 11657-1989 Health protection zone standardfor copper smeltery (closed blast furnace type)
    铜冶炼厂(密闭鼓风炉型)卫生防护距离标准    		 China National Standards
    smeltery
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