using unique balancing mechanism and full of advanced non-contact control circuit, so running light, balanced and reliable. weak electricity intelligent control system, in addition to a general electrical control functions, but also to manual control, remote control, computer-controlled combination . off switch, automatic slip, the pressure wave sensing device to prevent misuse and other unforeseen circumstances smashed cars. use of digital control technology, process monitoring Barrier running process to achieve Barrier intelligence operations, simplistic. chassis and body structure made of high quality construction materials, molding traditional systems and major structures are also professionally produced, the whole system is safe and reliable operation of the barrier to rely on high cost, has been widely used in residential, commercial buildings, docks and other practical places. < SPAN lang = EN-US> < /SPAN>