Located in the new immigrant town--Yunyang, Yunyang Crankshaft Co., Ltd. is facing the famous scenic spot "Zhangfei Temple" on the other river bank with 2000 million RMB assets and over 1000 employees. Occupying 93 thousand m2, the company specializes in manufacturing of combined-type motorcycle crankshaft and integral universal gasoline engine crankshaft with annual production capacity of 4 million. Yunyang is the only one in China that possesses full range of production procedures of crankshaft, connecting rod and crankshaft pin, i. e. Forging, heat treatment and machining. Company's existing products CG125, CB125T, CM250, ATV350 ~ 800 and other models motorcycle, ATV crankshaft and the gasoline engine crankshaft, the crankshaft model airplane, aviation, 100 kinds of umbrellas crank.

Founded in 1956, the company specializes in metal processing. In 1984, Jianshe expanded production and appointed someone with technical material, tool set up clamp and products to our company for supporting motorcycle crankshaft manufacture. With multi-aspect supports, Yunyang Crankshaft became the first choice of engine and motorcycle manufacturers when it's marketed. With the tenet of quality first, Yunyang passed ISO9002 certification in 1997 through 20 years' development and efforts of the staff as well as ISO9001-2000 in 2003. Yunyang Crankshaft was awarded "name brand product" of Sichuan province and "name brand product" of Chongqing, ect honors.

Yunyang keep improving in 20 years. In order to guarantee quality, all main and supplementary materials are bought from certificated plants, and we insist on utilizing 40Cr, ect materials with high mechanical property. Our chemical & physical center is in charge of chemical component analysis and low-power check and acceptance of raw materials as well as control of quality status in heat treatment procedure. Our length measurement center which owns legal qualification to implement maintenance and periodical check to all measuring tool and air gage guarantees length measure always keep in standard precision range, which offer strict guarantee to high-quality products.
Yunyang was the member of China Forging Association, and our characteristic iron dross precision forging technique guarantees surface quality and geometric size precision of non-processing parts, which is still in the leading position in counterparts of China and up to Japanese standard. This processing technique build firm foundation for dynamic balance consistency of crankshaft. Crankshaft forging remaining heat quenching technique which has been used for three years can enhance mechanical property, reduce production cost & cycle, which enhance our market competitiveness.

In the purpose of reinforcing R&D power of new products and shortening trail production cycle of new products, our company possesses tool set up, clamp and die production lines with self-independent production. The full procedure that one new product from die forging to finished product assembly can be completed in 10 days.

"Development is foremost", Yunyang will insist on the tenet of customer foremost and quality first to offer high-quality products and excellent service for end users.