2.Adjust the height of equipment,and always ensure that mechanical work under level state . 3.High efficiency and energy saving dynamic system,compact and sophisticated manufacturing technology . 4.Free to replace the chassis ,consumables free configuration (diamond grinding wheel). 5.Only with a reversing switch ,toggle switch can be changed motor direction of rotation . 6.The other is equipped with vacuum motor, not dust in the construction process, the operation is simple, portable,which is the best choice of the epoxy construction.