No.55 Hechuan District Popularity Ranking Chongqing No.5 Pipes and Fittings No.5 Chemicals Equipment No.7 Heat Exchangers No.12 Ya Li Rong Devices No.13 Liu Ti Technology No.13 Stainless Steel Products No.25 Analytical Instruments No.27 Testing Machines No.29 Laser No.37 Laser Technology No.39 Special Equipment No.90 Testing Equipment 高新技术企业 市级专精特新中小企业 省级高新技术企业 市级高新技术企业 科技型中小企业 市科技型中小企业 市级创新型中小企业 ISO9001认证 ISO/TS16949认证