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JKQ Characteristics:The series product can lock at any position during the running. There is ejection rod in the end of the piston, and the inside valve will be turn on to flow the gas or oil when push the ejection rod, and the lockabled gas spring can stretch easily as Compressed Gas Spring. When it moves to required position, the inside valve is be shut off after the ejection rod release, and the piston will be locked accordingly. The gas spring after locked can bear large load, but if it is overloaded, the lock function will not work.