A series of gas spring can make piston rod in any place by the control of human., and allows 360° Of smooth and noiseless swivel in either direction, works neatly, steady and reliably, and can be designed and made according to customers'request. Followings are some fo our Superiority: 1. High quality as well as competitive price can help you to reduce your furnitures cost. 2. Easier to install and flexible match Any questions, pls contact us!