TUS Environmental Science and Technology Development Co., Ltd., together with its subsidiaries, provides environment improvement solutions in China. It offers digital sanitation services, including unmanned sanitation, domestic waste classification, green and smart properties, environmental sanitation, smart public toilets, and others; water-eco services, such as water investment, intelligent environmental protection, water environment products and equipment, water environment technology, supply chain business, and others; and organic solid waste services comprising kitchen waste, sludge treatment, tailing treatment, pretreatment, anaerobic fermentation, and others. The company also provides zero-carbon energy services, which include research, planning, design development, investment and financing, EPC general contracting, operation, and maintenance of waste incineration and power generation, as well as upgradation of traditional waste incineration and disposal plants; and solid waste and renewable resources services, such as solid waste treatment and disposal, and renewable resources utilization. In addition, it offers TUS-EGUARD platform that is involved in the research, design, development, and manufacturing base for sanitation trucks and environmental protection equipment, comprising new energy devices, municipal vehicles, cleaning tankers, and garbage stations, as well as sweeping, garbage, and self-driving pure electric trucks. The company was formerly known as Tus-Sound Environmental Resources Co., Ltd. and changed its name to TUS Environmental Science and Technology Development Co., Ltd. in July 2019. TUS Environmental Science and Technology Development Co., Ltd. was founded in 1993 and is based in Yichang, China.