Rigid locking gas springs,Hydrocarbon segregation two-way, Floating every tucked in one side of the piston, piston rod and liquid oils were floating every plug isolated in the part of the piston rod and pistons for a period of airtight tube cavity and air Spaces in front of every plug, open valve because oil chamber volume change, push forward between plug, lie between plug stress compressed air, When the piston rod movement in any one place suddenly close the valve, the pistons at the bottom of the liquid oil was closed after a rigid.
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