... to ring, dust ring, metal hose, customizd non-standard rubber parts and molds, all kinds of high-pressure, low pressure pipeline ... of tape, plastic sheet, rubber hose, production and operation of all kinds of new and old international O-ring.Good quality ... on2.Application: trains,automobile,motocycles,trucks,buses,agricutural machinery and any equipments3.Certification: GB/T19001-2000-ISO9001: 2000 ...