YUHUAN CHANGJIANG VALVE CO.,LTD. is a professional manufacturing factory combined with automobile, motorcycle, inlet & exhaust valve of engine and inlet & exhaust valve of internal combustion engine. At present, the factory building covers an area of 6800m2. Equipped with special applinance and technics, the factory has over 100 sets of equipment, whose a number of technology and technics are keeping ahead of the field. Also, the enterprise is ISO9000:2000 certified. It sticks to the national technologic standard QG/469-2002 and JB/6012 producing and inspecting its products that are superb in quality. Through innovating technology, the manufacturing has come into being in large variety and scale. With steady quality, its products are sold well in domestic market and exported to many countries, and enjoying good reputation from all customers. The products' main technical characteristic: bimetal butt-welding technology, metallic powder build-up welding technology, tri-groove simultaneous grinding technology, metal salt bath surface strengthening improvement technology, high-speed chrome plating technology, etc. Now there are professors and experts from 3 universities and several institutions as the factory's consultants, which further ensures more stable quality, The enterprise promises to offer products with best quality, best prices and best service to clients.