1)Wire Dia.:0.01mm-40mm. 
2)Material:carbon steel;spring steel;stainless steel,alloy steel.
3)We can do OEM.
4)load type of precise spring:compression spring,extension spring,torsion spring,wire spring ,spring clip,die spring,hot coil(hot wound)spring. 
5)Surface treatment: Zinc, Nickel, silver, golden, tin, powder coating.
6)Usage: industry motorcycle  furniture  Automotive, medical device, electronics, toy, etc