Ningbo Sedsun Vibration Damper Co., Ltd is the leading torsional  vibration damper company specialized in R&D development, testing & measurement, manufacturing of Torsional Vibration Damper in China, including viscous damper, rubber damper, and plate spring damper/coil spring damper, it has the most diversified customer base in China, and having the latest  production technologies as well as complete range of testing & verification  facilities

The company has been acting as the leading designer & supplier of torsional vibration damper both in damper development & mass supply, it is supplying to Dongfeng Cummins Engine Company, Cummins Industrial Power Ltd, Dalian Diesel Engine  Co., CNHTC (China National Heavy-Duty Truck), Weichai Power, Yulin Diesel  Engine, Dongfeng Chaoyang Diesel, FAW Wuxi Diesel, BYD, Chery, Great Wall,  with its own design, having production capacity of 500k  pcs for visco damper and 1Mil pcs for rubber damper yearly. The dampers are well used  on passenger car, light duty, medium duty & heavy duty commercial vehicles, marine M/E & genset, construction equipment & stationary engine applications.

The company has full independent R&D capacity, R&D team is headed by senior professionals specialized in research of engine vibration and noise control for dozens of years. Taking simulation method of numerical calculation, R&D team has full sets of testing facilities for torsional analysis, measurement and damper verification, meanwhile having close cooperation with reputable University & leading Research Institute of Internal-Combustion Engine of Shanghai.

ISO9001:2000 was certificated in 2001, ISO/TS16949:2002 was certificated in 2005, then IATF16949:2016 was certificated, and ISO14001:2004 was certificated in 2015.