Spring Technology Solution Provider 

Since 2006

 +86-18951530858        lucy@sunzospring.com


Jiangsu Sunzo Spring Elasticity Technology Co., Ltd.

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. 



SUNZO can provide the best elasticity technology solution according to customer requirement, earned good reputation and trust from clients home and abroad.


SUNZO has more than 200 large punching machine and CNC machine tools


SUNZO provide you with product cleanliness inspection, inspection and analysis of material capability and life Testing.
Spectroscopy Analyzer
Salt Spray Tester
Metallographic Microscope
Mechanical Property Tester
Spectroscopy Analyzer


  • Is SUNZO certified?

    Yes, SUNZO is ISO9001 and IATF16949 certified.
  • Does SUNZO keep stock of Belleville Disc Springs?

    Yes, SUNZO has over 400 different sizes of Belleville Disc Springs in stock located in Suqian JS.
  • What type of applications use Belleville Disc Springs?

    Belleville Disc Springs are most often used in applications to solve vibration, thermal expansion, relaxation and bolt creep problems.
  • How do disc springs work?

    Disc Springs are conically-shaped, washer-type components designed to be axially loaded. ... Disc Springs can be statically loaded either continuously or intermittently, or dynamically subjected to continuous load cycling. They can be used singly or in multiples, stacked parallel, in series or in a combination thereof.
  • What are disc springs used for?

    Disc springs are used in applications throughout a wide range of industries. Because spring washers exert a uniform pressure that remains constant, they are an ideal solution for situations where tension losses caused by thermal expansion/contraction, compression set, or wear of parts occur.
  • Still have questions about us?

    Please submit the “contact us”  or just call us at 18951530858.

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.

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