Guangzhou Panyu District Guangdong Metering Pumps Water Supply and Drainage Design Environmental Technology Environmental Engineering Environmental Treatment Shi Zheng Gong Yong Engineering Gong Ye Fei Gases Processing Energy Saving and Environmental Protection Hua Gong / Chemistry Shui Chu Li Wei Hu Municipal Engineering Water Treatment Technology高新技术企业科技型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专精特新小巨人企业