1. If the mini-slot machine with the use of welding word, the welding effect will be better. 2. Slide operation: the installation of ball slide on the machine, the machine will minimize the error, the appropriate increase in lubricating oil maintenance can be. 3. Positioning system: can control the position of the blade to the panel. Luminous characters metal slotting machine galvanized iron light portable slotting machine edge welding edge slotting machine. -