China National Standards

China Qy Industry Standards English PDF List

  •  China " Qy" Industry Standards English PDF List:
    • Standard  Code Standard Title Standard Class Order
    JJG(QJ)33-1987 (Qy-0. 6, 2. 5, 5. 6 type one or two standard pneumatic piston gauge test procedures)
    		China Metrological Standards
    Qy
    English PDF

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