1.Front and rear caps are finished by aluminum alloy die-casting, CNC mechanically processed with high precision.

2.Aluminum tube is imported ,stainless forever with friction & corrosion resistance.

3.Adopt imported none lubrication, long time service and no need lubrication maintenance.

4.Unique cushion technique makes smooth action.

5.May add the sensor equipment to earily control.

6.In terms of SC series ,pull-rod is hidden inside.