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Executive standard
1、Spring steel.(GB/T1222-2007)
2、Leaf spring.(GB/T19844-2005)
3、Automobile leaf spring bench Ways.(JB3383-1983)
4、Automotive leaf spring metallographic test.(JB3782-1984)
5、Automotive leaf spring shot peening treatment.(QC/T274-1999)
6、Automobile leaf spring provides the quality of classification.(QCn29103-1992)