China National Standards

China Number designation safety GB Standards List

  •  China "Number designation safety" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 7778-2017 Number designation and safety classification of refrigerants + No.2 modification sheet
    制冷剂编号方法和安全性分类+《第2号修改单》    		 China National Standards
    Number designation safety
    English PDF
    GB/T 7778-2008 Number designation and safety classification of refrigerants
    制冷剂编号方法和安全性分类    		 China National Standards
    Number designation safety
    English PDF

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