Shenzhen Expressway holds a 15% stake in Shenzhen Water Planning and Design Institute Co., Ltd. (Shenzhen Water Planning Institute), a national high-tech enterprise whose main business is survey, design and consulting of water conservancy and municipal water supply and drainage projects. Professional technical services such as engineering survey, design, planning and consulting, and its business covers 17 provinces and cities including Central China, South China, Southwest China, and East China. Deep Water Planning Institute has achieved IPO listing in August 2021.