HEIWA HATSUJYO INDUSTRY CO. has released "process patented" "spring washers" for industry development, and provides process patented fastener components including PS lock washers and disc springs for hex bolts with hex sockets. Additionally, the company holds the No.1 market share in Japan for NR retaining ring bearing components and crown-type retainers using advanced proprietary technology for the mold design process through to the press processing and heat treatment stages.