... beam is raised or lowered by turing the screw rod.With a manner of turning screw rod of shear jack manually or electrically. and a synchronous adjustment of multi-point support,
... beam is raised or lowered by turing the screw rod.With a manner of turning screw rod of shear jack manually or electrically. and a synchronous adjustment of multi-point support, more
Brand Name:GQ
Model Number:GQ-A Fixed-adjustable Mounting System
