Tabletop is made of ABS material by use of one-time-molding techniques, Design of fan-shaped can add working area. Height of tabletop adjustable Host computer is built in, low power loss, D.C. Stabilized source, include network Lithium battery are 12V-18.5V,high power and safe, the same time to be safe use and manage it, the power source is upon With the space for mouse, keyboard Fan-shaped chassis, walk more steady