1.Machine body lifting. Workingtable height is constant.                           

2.It is with high precision and stable function.                
3. The micro computer controlling panel is easy to operate.  
4.  Auto-calibrating,photoelectrical controlling and stepless speed shift. 
5. It is with advanced control and can be used for high automatic production line to achieve terminal control.  

6. It can be used with down sanding machine. Once feeding can achieve to sanding two surfaces and saving work labor. 
7.  Different mode is for your choice,calibrating,fine polishing and so on.