SHANGHAI HEGONG DISC SPRING MANUFACTURE CO.,LTD. (Hereafter called “HEGONG SPRING ®”) is a leading manufacturer in China specializing in designing and manufacturing of disc springs, disc spring washers, wave springs and various elastic elements. As leading company in the industry, HEGONG SPRING ® participated in drafting the standards of GB/T 1972-2005 (national standard for disc springs), JB/T 13296-2017(Wave Springs), JB/T 11698-2013 (Volute Springs) and JB/T 6655-2013 (High temperature resistant cylindrical compression springs).