Features & Functions：
In the natural state, the piston rod is fully retracted. External pulling force is required to extend it.Its core function is to provide auxiliary tension during the stroke, enabling the closing, lifting and resetting of components. Advantages：
1.Space-saving; especially suitable for applications with limited installation space.
2.Compact structure with high output force. It can provide greater force than mechanical springs of the same size within the same installation space.
3.Smooth and controllable movement.
4.Long service life, reaching more than 100,000 cycles. Typical Applications：
Elevator escape hatches, escape doors;
Hatches and flip covers for special vehicles and ships;
Medical devices and certain resistance training equipment in fitness equipment, etc.
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