Push chain, also known as rigid chain, is a "rigid and flexible" chain, which can be rolled and folded like an ordinary chain, and can withstand pressure like a jack. Compared with rack and pinion, push chain can be crimped and stored to improve space utilization. The push chain can be rigid in a certain direction, which is more advantageous in the condition of long linear push and pull. Because of its unique advantages, the development and use of push chain is attached great importance at home and abroad, and the push chain has been developed into an industrial transmission device - linear transmission device. The rigid chain and d evices and equipment independently de veloped by CHOHO, with a c omplete production, sales and aft er-sales system, eight advantages, reliable performance, quality assurance, can provide customers with targeted solutions and customized services.