Shenzhen quality technology supervision bureau longgang district is located in the city center, branches of intelligent building quality supervision system Qiaochen construction science and technology by electricity, divided into structured cabling systems subsystem, closed-circuit television monitoring subsystem, infrared security alarm subsystem, TV conference call subsystem, public broadcasting subsystem LED digital display subsystem and information, including structured cabling systems by guangdong subsystem technical supervision integrated wiring system quality supervision and inspection offices, shenzhen product quality supervision, inspection and monitoring selective examination, appraised as 100% pass rate high quality project quality.