Our factory is specialized in manufacturing torsion springs for garage door, rolling up door, industrial door, and make torsion spring according to DIN. We can also produce springs according to customer requirements with series quality grade and also at a reasonable price .Our products sell all over the world, such as France, UK, America, Canada, Iran etc.The enterprise has fully implemented ISO 9001:2008 international quality management system.We can stability provide for our trading partners the springs they need and the price is reasonable. We can supply immediately after your order, so you can also present your customers the solution quick and expert.The Specification of spring: 1.75'' 2.0'' 2.625'' 3.75'' 5.25'' 6'' etc. Materials: DIN 17223, JIS G3522, GRS3522. Wire Diameter: from 4.0~12mm.The series of door springs we developed are equal to the spring that made in Germany. Excellent quality, competitive price; high strength and long lifetime.
