SUNZO has specialized in the production of quality disc springs in compliance with DIN2093 and DIN6796 standards, Manufacturing disc spring with outer diameter from 6mm to 600mm, Variety raw material applied in SOLTECH disc springs to meet customers’ special requests, such as standard material 50CrV4; corrosion resistant steel SUS301, SUS 304, SUS316, SUS631; Heat resistant steel X 22 CrMoV12-1, X 39 CrMo17-1; Nickel and cobalt alloys Nominic 90, Inconel X750, Inconel X718, etc.