Ningbo Sedsun Vibration Damper Co., Ltd.was established in 1998 with a construction area of 48000 ㎡ and more than 300 employees. It is a high-tech enterprise with domestic scientific research capacity and large-scale production of crankshaft shock absorber design, research and development, and manufacturing of rubber shock absorbers, silicone oil shock absorbers and leaf springs that reduce torsional vibration on engine crankshafts and camshaft transmission shafts./Coil spring shock absorber, spring shock absorber, engine rear-end hydraulic shock absorber (limited torsion shock absorber), diaphragm coupling, leaf spring coupling, carbon fiber coupling, as well as rubber vibration isolation pad, high elastic coupling research and development and manufacturing. The company's advantage is that it has a complete technical research and development team, perfect test equipment, and a complete vertical production supply chain.
The R & D team is led by senior professor-level researchers majoring in engine vibration and noise in China, supplemented by rubber shock absorbers, silicone oil shock absorbers, leaf spring/coil spring shock absorbers, hydraulic shock absorbers and coupling series of various types of test equipment for analysis, calculation and verification of product performance.

The company has the ability to produce 1 million parts of rubber shock absorber, 800000 parts of silicone oil shock absorber, 50000 parts of hydraulic shock absorber, 10000 parts of leaf spring/coil spring shock absorber and 10000 parts of coupling series. The self-developed shock absorbers and couplings are widely used in diesel and natural gas engines of light, medium and heavy commercial vehicles, gasoline and diesel engines of passenger cars, marine main engines, marine/land generator sets, construction machinery, agricultural engines and unmanned aerial vehicles. The company passed the ISO9001:2000 quality system certification in 2001, TS/1694916949:2002 quality system certification in 2005, followed by IATF16949:2016 and ISO14001:2004 certification in 2015. The company has been jointly certified by relevant government departments as "High-tech Enterprise" and "Zhejiang Famous Trademark".
At present, the company has won honors such as Ningbo Enterprise Engineering Technology Center, Ningbo Specialized Special New Small and Medium-sized Enterprises, Zhejiang High-tech Enterprise Research and Development Center, Zhejiang Postdoctoral Workstation, and National High-tech Enterprise, and strives to become a domestic advanced engine vibration reduction, Excellent supplier of noise reduction solutions.