Handan Yanzhao Fastener Manufacturing Co., Ltd

1 Our main prouduct:     Nut: DIN934 GB52-76 GB6170      Bolt:DIN933 GB21 GB30 GB57832 Size: M6--M303 Steel Gread: A3 35K4 Surface For Steel Items: Plain, Zinc Blue, Zinc Yellow, Zinc White, Phosphated5 Class:4 , 6 ;  4.8, 6.8   Used in electric power, mining, transportation, building, machinery manufacturing, construction, electronics industries. Yan Zhao Fastener Manufacturing Co., Ltd. is a modern enterprise. specialize in the production of DIN & GB optical hexagon bolt, nuts. We have the most advanced cold heading machinery and equipment, first-class technical talent and rigorous product quality assurance. Uphold the principle of equality and mutual benefit, the enthusiasm with you, if required please contact [Details]