China National Standards

China Testing method locking Industry Standards English PDF List

  •  China "Testing method locking" Industry Standards English PDF List:
    • Standard  Code Standard Title Standard Class Order
    QB/T 4297-2012 Testing method of locking force for fastening piece of sewing machine
    缝纫机紧固件锁紧力试验方法    		 China Light Industry Standards
    Testing method locking
    English PDF

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