Jiangsu Sunzo Spring Elasticity Technology Co., Ltd.is a mixed ownership joint stock company invested by the industrial fund of CNNC (China National Nuclear Corporation). The research and development center is located in Nanjing, the factory is in Sihong, Jiangsu.

Sunzo is professional in researching and development, producing and sales of all kinds of Belleville washer, disc springs, wave springs etc.. Sunzo products cover areas including Commercial Vehicles and Truck, Power Energy, Construction Machinery, Steel, Machine tool and tooling, Petroleum and chemical industry, Elevator, Valve and Actuator etc.. Sunzo also cooperate with several key university, has been a quality partner of many industry benchmark company.

  SUNZO has it’s own researching and development team and test center, has participate in rule-making of the latest national industry standards and the international ISO standards for disc springs. 

  SUNZO has passed certificate including: ISO 9001、IATF 16949、ISO14001、OHSAS18001, and has got more than 30 patent of inventions. 

  Owns core competitiveness, has a full set of industrial chain from key materials to key equipment and produce quality products.

  SUNZO has a beautiful working environment and full set of production equipment, has an area of 60 mu, own several production lines researched independently.