No.421 Fengtai District Popularity Ranking Beijing No.4 Milling Machines No.5 Lathes No.5 Grinding Machines No.6 CNC Machine Tools Processing No.8 CNC Processing No.8 Tooling Clamps Tools No.11 Casting No.12 Jin Shu Re Processing No.14 Structural Design No.19 Zhuang Pei No.24 Processing Processing Equipment No.25 Processing Equipment 中关村高新技术企业 国家高新技术企业 高新技术企业 科技型中小企业 省级高新技术企业 市级高新技术企业