It has different structural and assembling forms, and promote the height according to the users' requirement

 SWL(QWL) series Screw Jacks is a kind of jack-up part having compact structure, small, light, extensive power source, noiseless, flexible usage, high dependability, long life performance features. It can control height promoted or advanced to a certain procedure when using single one or more, can directly drive with motor or other power, also with manual. It has different structural and assembling forms, and promote the height according to the users' requirement..