CHYNG ING CO., LTD. was established in 1979. ISO 9001 certificated. Professional manufacturer of rubber products. We manufacture custom molded rubber products in any shapes, sizes, or materials such as Rubber dust boots, Rubber to metal bonding, Rubber Bushings, Rubber buffers, Rubber bumpers, Shock absorber rubber parts, Rubber gaskets, Rubber grommets, O-Rings, Seals, Packings, Keypads, Rubber feet, Adhesive backed rubber parts. CHYNG ING offers injection molding, transfer molding, and ...