No.493 Songjiang District Popularity Ranking Shanghai No.4 Zhi Hui Xiao Yard No.4 Low-voltage Engineering No.6 Security Surveillance Systems No.9 Smart Society District No.9 Security Systems No.10 Ji Station No.11 Antennas No.13 Chan Ye Zi Yuan No.15 Smart Yard District No.17 New Infrastructure No.23 Communication Equipment No.26 Gong Ye Hu Copies 市级高新技术企业 高新技术企业 省级专精特新中小企业 市级专精特新中小企业 科技型中小企业 市科技型中小企业 省级高新技术企业 省级创新型中小企业 ISO9001认证 电力工程施工总承包 钢结构工程专业承包 施工劳务资质