Derun Houtian was founded in 2008 with water quality sampler as its founder. It has been committed to the research of sampler technology and promoting the technological development of the sampler industry. Later, it took "countrymen people to drink safe water" as its own responsibility, and started from three aspects: strong control of water source pollution, quality water supply in fixed places, and healthy and good water supply in mobile places to ensure countrymen people to drink safe and healthy water. Our main business covers research and development of environmental protection instrument technology, healthy drinking water research, instrument and equipment manufacturing, e-commerce service platforms, smart water supply services, third-party testing services, and third-party operation management services. Derun Houtian's six subsidiaries, Hebei Derun Houtian Instrument Manufacturing Co., Ltd., Beijing Derun Tiancheng Environmental Protection Technology Co., Ltd., Shijiazhuang Derun Environmental Protection Technology Co., Ltd., Hebei Shangshan Ruoshui Environmental Treatment Co., Ltd., Hebei Zhengwei Testing Technology Service Co., Ltd., and Beijing Derun Houtian Water Industry Technology Co., Ltd., each have their own focus and strengths around the environmental protection industry chain. At present, we have obtained 36 software copyrights, 2 invention patents, 35 utility model patents, and 7 design patents.