About Us

Changzhou Double Spring Machinery Co., Ltd. supplies a full range of high quality lift gas springs, lockable gas springs, traction gas springs, stainless steel gas springs, cabinet gas springs, dampers, electric linear actuators.

Our lift supports are widely used in office furniture (seat gas spring), toolbox, cabinet, hood, lid, bonnet, marine, medical equipments, fitness equipments, machines, automobile, etc.

We are located in Changzhou City, Jiangsu Province, nearby Shanghai for 2-hour driving.

We have production line and testing machines including Salt spray test, Fatigue test, Force test, Temperature test, etc. You can trust us in our quality and production ability.

Our Gas spring has achieved SGS and passed SGS 80,000 times fatigue test, 96h salt spary test hours assured. CE for linear acutuator is also approved. Also we have ISO9001, TUV certification. Besides, our engineers has professional knowledge in designing, producing and developing full range of gas springs like high temperature resistance gas spring, force adjustable gas spring, free stop gas spring, wireless controlled linear actuator, etc.

Your dimensions or drawings are also acceptable, our OEM service makes sure you will get the spring you need.

gas spring test machine


Nowadays, our factory’s annual output can reach 20,000,000pcs. We exported to over 100 countries like the North America like the United States, Canada, South America like Peru, Chile, Brazil, Colombia, European countries like Italy, Switzerland, Germany, Asia like Vietnam, Philippine, Singapore, India, etc. Good feedback are well received from home and abroad. Your satisfaction is sure to help us improve all the time. Hope we can have long-term cooperation in the near future!

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