1.With high strength and good rinidity. 2.Hydraulic top-drive. 3.High precision. 4.Guarding with safety interlocker . 1, The frame is the whole welded structure, the whole tempered by the fireplace, the machine to maintain good accuracy.2, Hydraulic pressure on the acting, stepless voltage regulation, the use of imported high-quality seals to ensure the reliability of the machine.3, Mechanical ...