Win-win (Tianjin) Metal Products Co.,Ltd., is the leading chinese manufacturer in Tianjin China. We manufacture all sorts of spring wire, including cold drawing high carbon spring wire and oil hardened & tempered spring wire. They can be made to suspension spring, engine valve spring, mechanical spring, mattress spring, etc.

The material we often use include 60Si2Mn, 55SiCr, 50CrMn, 50CrVA, 60#,70#, 72A, 82A, etc. Most of our raw material are made by high grade industrial manufacturer in China ...