China National Standards

China Portland General Industry Standards English PDF List

  •  China " Portland General" Industry Standards English PDF List:
    • Standard  Code Standard Title Standard Class Order
    SY/T 5811-1993 (Portland General technical conditions blocking agent series)
    硅酸盐系列堵剂通用技术条件    		 China Oil & Gas Industry Standards
    Portland General
    English PDF

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