Headquartered in Kaga, Japan, Daido Kogyo Co., Ltd. is a global manufacturer and distributor established in 1933. Operating under the D.I.D brand, the company produces a diverse range of products, including chains, rims and wheels, various conveyor systems, and welfare equipment. Its motorcycle division offers components such as drive chains, lightweight aluminum rims, engine timing chains (essential for transmitting rotation), spokes, wheels, and handle pipes. The company also supplies industrial chains, including transmission, transport, and conveyor types, which are widely utilized across sectors like transportation, chemical processing, construction machinery, and agriculture. Furthermore, Daido Kogyo develops specialized conveyor systems for handling powder and bulk materials, environmental applications, and steelmaking processes (including rolling equipment), as well as vacuum conveyor solutions. For enhanced accessibility, it provides welfare equipment such as stair chairlifts, wheelchair stair lifts, and supportive stair-assist handrails. The company was formerly known as Daido Chain Co.,Ltd. until it adopted its current name in December 1938.