Changzhou city ltd. Specializes in the production of various types of silica rubber lines, iron fluoride lines, irradiation lines, ul electronic lines, cloud-backed lines, thermal doll compensation circuits, electric motor vehicles' eight-chip lines, flexible towed chains, high-pressure car lines, etc. The company's products have been certified by the national compulsory products ccc, ul certification by the united states, ec certification by the european union, iso 9001, iatf 16949 certification, with over 30 patents and products sold abroad and abroad。