Chongqing Dadong Longteng Automobile & Motorcycle ValveManufacturing Co., Ltd. is a private joint-stock enterprise,established in1993. We are professional in producing the valves ofvehiclesãmotorcyclesãgeneral machines and valve springretainersãvalve split collets. Our company covers about 50 acre,has more than 500 sets of various of high precision machining andtesting equipment. The producing procedure of valves includeintegral series of totally enclosed operating from forgemodelingâheat treatmentâmachining of metalsâhard alloy ofresurfacing welding on both conical surface and rod endânitrogentreatment on surfaceâfinished products precision machining. Theproducing procedure of valve spring retainers and valve splitcollets include integral series of totally enclosed operating fromraw materialâcold extrudingâheat treatmentâfine machiningâpolishingtreatment. Now we have our own fund 50 million(no any loan), have1000 staffs.    We keep on striving and innovation. At present, the annual outputis 30 million of various inlet and exhaust valves, more than 120kinds of valves of gasoline machinesãgeneral machines, and valvespring retainersãvalve split collets, Dadong has become the keyenterprise of Chinese valve industry. According to the modementerprise management system, Dadong practiced the system ofgeneral manager responsibility under the leadership of Chairman,has high-tech of exports who enjoy state subsidies and seniormanagement personnels with rich management experience, whichendowed the company with great strength of independent search anddevelopment.   Our products are manufactured under strict observation of theInternational Standards Authority (ISA) and the Chinese NationalStandards (GB). In 2006 we got the ISO/TS16949 QualityCertification on the basis of ISO9001 (2000) Quality SystemCertification which we had gotten in 2001. Dadong continuouslypassed the detection and evaluation of China Motorcycle QualityInspection Institute and Chongqing bureau of quality and technologysupervision, has become Star of China of technology supervisionbureau ãentitled Quality Fixed Point Unit . Dadong is the mainsupplier for the vehicle motorcycle group such asBMWãPiaggioãSuzukiãHaojueãZongshenãLoncinãLifan for a long time,and exported a dozen of abroad countries as well, the products aretrusted and well received by our customers. Tel: 0086-23-89034231 13637924039 QQ:1641504901 Skype:ivy-dq-valve  Email:[email protected]