Lockable gas spring: also known as controllable gas spring or angle adjuster, controls the stroke by opening and closing the valve, so that it can be locked at any position throughout the entire stroke. It also has the function of supporting, adjusting height or angle, and can stay at any position.

Its advantage lies in the lack of adjustment steps, making it easy to stop and lock. It can be completed at any position by adjusting the handle and switch, and the operation is smooth.

It is now widely used in aircraft, train seats, wheelchairs, medical equipment, massage chairs, leisure function sofas and other fields.