China National Standards

China regultion Industry Standards English PDF List

  •  China "regultion" Industry Standards English PDF List:
    • Standard  Code Standard Title Standard Class Order
    JJG 831-1993 Verification regultion of green sand mould surface hardness tester for castings
    铸造用湿型表面硬度计(试行)    		 China Metrological Standards
    regultion
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