... . About us : We are professional spring manufacturer, have over 10 years experience in spring production and sales, we have ... springs, Extension springs, Torsion springs, Battery spring, Power spring, Coil spring , Leaf spring, Mould spring,etc., and other unique feature products. ( ... .minisite.productShow(); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); Machine Tool Torsion Spring