We custom manufacturer all kinds of wire diameter spring. 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 7)Packaging Detail: Inner Packaging: Smaller Plastic Bags; Outer Packaging: Cartons or Pallet .we can also package products according to your requirements. 8)We import the most sophisticated computer compression spring machine from Taiwan; it can do 100 percent inspection to spring length, which ensured the spring quality stable and precise.