Changsha Changsha County Hunan No.11 Water Treatment Equipment No.12 Submersible Pumps No.12 Electromechanical Products No.14 Non-standard Automation Equipment No.15 Water Supply and Drainage Design No.15 Equipment Design No.15 Water Supply and Drainage Engineering No.16 Water Supply and Drainage No.16 Water Pumps No.20 Electromechanical Engineering Design No.22 Vocational Healthy No.24 Construction Electromechanical Engineering 省级高新技术企业 高新技术企业 科技型中小企业 省科技型中小企业 省级专精特新中小企业 国家高新技术企业 ISO9001认证 ISO45001认证 ISO14001认证