Hunan Sanyou Environmental Protection Co. Ltd. (SANYOU EP) , established in 2016, is a global leader in water treatment technology services. Driven by its vision of "Guardians of Life Sources" and fueled by technological innovation, the company provides a wide range of services, including municipal wastewater treatment, industrial wastewater treatment, and intelligent water solutions. SANYOU EP is dedicated to delivering green, efficient and intelligent water treatment solutions to clients worldwide through its portfolio of internationally advanced technologies.

Based on  the Sun Jiaguang Academician Workstation and 7 major research platforms, SANYOU EP has independently developed several core technological products. Among them, HPB technology is a highly efficient and low-carbon technology for simultaneous nitrogen and phosphorus removal. It has been recognized by multiple experts, reaching an internationally leading standard.. This technology offers numerous benefits, such as  cost savings, land occupation reducing, project duration shortening, high standards, high efficiency, strong reliability and low carbon emissions. It is particularly effective in improving the performance and efficiency of municipal wastewater treatment plants.

SWS series, a smart water management product co-developed by SANYOU EP's process and IT teams, is designed to support comprehensive management of wastewater treatment plants. It helps stabilize production, reduce energy consumption, and drive the green, low-carbon transformation by enhancing management practices.

CCB technology is employed for the removal of hardness, fluorine and heavy metals from water. It is widely applicable to the treatment of municipal drinking water (e.g. surface water and groundwater) and industrial water (e.g. circulating water, mine water, reverse osmosis concentrated water, etc.). his technology provides  significant environmental, social and economic benefits.

EPOA technology breaks through the limitations of conventional advanced oxidation processes and demonstrates stable, high-efficiency performance in the deep removal of COD from various types of industrial and municipal wastewater.

To date, SANYOU EP has successfully implemented over 40 demonstration projects across  more than 20 provinces and cities in China. The company has received numerous accolades, including recognition as a national high-tech enterprise and national-level “specialized, refined, peculiar, and new” key small giant enterprise. SANYOU EP remains committed to strengthening its innovative capabilities and achieving leapfrog development.