... . Side waist structure: steel structure, aluminum structure. Can be equipped with options: trachea, fans, process card holder, dashboard, jack, toolbox ... required for transmission speed, width, board width at any time with high-speed, body composition Youlvhejin. Hand-push plug-in ... : (1 ) Fluorescent (2) fan (3) process drawing board (4) kit with a 220V power outlet (5) Rocker (6) component box PCB ...