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was founded in 1987, specializing in the production of A.B series precision roller chain, motorcycle special chain and high-end oil seal chain, all kinds of logistics transportation machinery chain, dustproof and waterproof industrial oil seal chain and agricultural machinery chain, lifting machine chain, silent tooth transmission chain, stepless transmission chain, intelligent door and window bending chain, stainless steel chain, non-standard special chain and sprocket. Since 1991, in cooperation with Jilin University of Technology chain Transmission Research Institute of China chain Research Institute, the PIV stepless transmission chain and CL series silent tooth chain have been optimized and upgraded, the high-end motorcycle oil seal chain and heavy duty series precision roller chain have been developed, and the cooperation of production, learning and research has been established.