item name: extension spring material: spring steel, stainless steel and so on certification: ISO9001:2000 wire: dia0.3-30mm

1)we are specialized in producing many kind of presion extension spring  in xiamen china.

2)our company uses inported fully-automtic NC precision spring facilities.

3)the surface treatment can be zinc,trivalent plated,PVC and so on.

4)our springs are mainly used in cars, electric equipment, furniture, light product and so on.

5)competitive price and first-class quality

6)Be treated with eletroplating and powder coating to extend rust resistance

extension spring