No.135Daxing District Popularity Ranking BeijingNo.3 Dian Zi Yu Intelligence ChemicalNo.5 Anti-theft Alarm SystemsNo.9 Hardware DesignNo.10 Early Warning SystemsNo.13 Video Surveillance SystemsNo.13 Hardware R&DNo.13 Video Security SurveillanceNo.14 Video SurveillanceNo.15 Bei Lu SystemsNo.16 Dian Zi Yu Intelligence Chemical EngineeringNo.16 Wu Lines CommunicationNo.19 Yi Dong Wu Lines Communication中关村高新技术企业副会长单位自主创新产品会长单位国家高新技术企业高新技术企业计算机信息系统集成一级资质建筑智能化系统设计资质电子与智能化工程专业承包