No.346 Yuexiu District Popularity Ranking Guangzhou Guangdong No.7 Water Treatment Systems No.12 Oil and Gas No.22 Water Treatment Engineering No.24 Shui Chu Li Wei Hu No.28 Water Treatment Technology No.31 Sewage Treatment No.32 Water Treatment No.42 Petrochemicals No.47 Environmental Protection Products No.48 Environmental Technology No.57 Drainage No.76 Energy Saving and Environmental Protection 高新技术企业 科技型中小企业 省级专精特新中小企业 省级高新技术企业 省科技型中小企业 省级创新型中小企业