No.262 Tianxin District Popularity Ranking Changsha Hunan No.5 IT Outsourcing No.6 Wang Zhan Jian She / Technology Outsourcing No.8 Video Surveillance No.10 Zong He Cloths Lines No.11 Office Automation No.12 Zheng Wu Xin Informatization No.13 Surveillance Systems No.16 Yun Wei Management No.19 Information Safety Management No.19 Construction Supervision No.21 Construction Intelligence Chemical No.24 Monitoring Systems 高新技术企业 理事单位 科技型中小企业 省科技型中小企业 省级高新技术企业 ISO27001认证