Die spring of rectangular section used in punching mould, metal die-casting mould, plastic injection mould and mechanical equipment with rigid structure is a newly developed product by our factory. It has good steel, high elasticity standard and high precision. The die spring made by rectangular section occupies a large market and application, and is warmly welcomed by customers both from domestic and abroad. Lead Spring Factory provides high quality die springs, which makes your mould lasting and help you to design you mould.