No.357 Fengtai District Popularity Ranking Beijing No.5 Zong He Cloths Lines No.7 Railway Systems No.10 Zhi Neng Lou Yu No.10 Smart Fire Protection No.10 Shu Ju Chuan Shu No.11 He Xin Systems No.15 Video Surveillance Systems No.17 Electronics Systems No.17 Video Surveillance No.18 Video Security Surveillance No.19 Electronics Systems Engineering No.20 Images Processing 高新技术企业 科技型中小企业 瞪羚企业 省级高新技术企业 市级高新技术企业 市科技型中小企业 中关村高新技术企业 创新型企业 专精特新小巨人企业