Based on different electronic technologies and targeting on different needs of internal uses, integrated intelligent building system integrates separated physical/electronic devices, functions and information of the building into a correlated, unified and coordinated system, achieves communication of information and control over devices, and realizes centralized, efficient and convenient management and utilization in the building. It integrates management system, structured cabling system, building automation and control system, fire alarm system, public security management system, cable TV system, public broadcasting system, computer network system, office automation system and parking lot management system in a centralized manner, and it can be flexibly customized depend on different venues and needs. An increasing number of new buildings will use intelligent integrated building system, and the organic combination of building and information technology will make ‘building thinking’, which fully meet modern information society’s requirements on functions, environment and effective management of buildings. BDK has been making continuous exploration, development and innovation in recent years, and intelligent building related system engineering has become one of its core businesses. Particularly in LV system integration project of gymnasium of Beijing Chaoyang Sports Center, LV system integration project of Beijing Mentougou gymnasium, renovation project of gymnasium of Shanxi Finance & Taxation College and LV system integration project of Beijing Training Center of China Huaneng Group, BDK was highly praised by competent authorities of different levels for quality engineerings, comprehensive facilities, straightforward operations and excellent services.