CDT Environmental Technology Investment Holdings Ltd. operates as a holding company. It engages in developing, producing, selling and installing sewage treatment systems and providing sewage treatment services. The firm operates through the following business lines: Sewage Treatment Systems and Sewage Treatment Services in both urban and rural areas. The Sewage Treatment Systems sells and installs proprietary rural sewage treatment systems and provides on-going operation and maintenance services to its customers. The Sewage Treatment Services provides on-site treatment services with its mobile and fixed septic tank treatment systems. The company was founded on November 28, 2016 and is headquartered in Shenzhen, China.