Guangzhou Huangpu District Guangdong No.2 Drainage Pipes Materials No.2 Drainage Pipes No.3 Ren Cai Introduction No.4 Water Pipes No.7 Water Supply No.8 Cai Liao Gong Ying Shang No.13 Water Supply and Drainage Design No.16 Pipes No.16 Water Supply and Drainage No.17 Plain Materials No.29 Ke Chi Xu Fa Zhan No.29 Environment Technology 高新技术企业 企业技术中心 专精特新小巨人企业 专精特新企业 市级科技进步奖 科技进步奖