Through the uninterrupted research and development of related technologies through industry, academia, and research collaboration, GNS ENGINEERING Co., Ltd. efficiently collects, conserves and manages water resources, environmental and energy resources essential for human activities, We are a company that contributes to green growth as a specialist consulting company for water resources development, environment and energy related activities that is based on the philosophy of being appropriate.

1. High-Efficiency Seasonal Geothermal Cooling-Heating System Using Multiple Auxiliary Injection Tube Wells - A seasonal thermal energy storage geothermal cooling-heating system that uses alluvial aquifers as thermal storage, storing cold water in winter and warm water in summer for use in greenhouse cooling and heating - A three-way check valve within a single pipe automatically switches between groundwater pumping and injection modes, simplifying the system compared to dual-pipe configurations and reducing installation and maintenance costs - Highly permeable aquifer zones are designated as target injection intervals, and inflatable packers are used to promote concentrated injection into the target aquifer and increase injection volume - Check valves applied to multiple auxiliary tube wells automatically open and close according to the water level of the injected water, enabling uniform distribution of injected water across each tube well without electronic control 2. Cartridge Filter in Rainwater Reuse Apparatus Article - Contaminants such as heavy metals and microorganisms contained in rainwater are removed through a filter made of activated carbon and activated carbon coated with silver and magnesium - Rainwater from which heavy metals and microorganisms have been removed can be used as gray water or domestic water 3. filter part of a low impact development facility customized in rural Article - Eco-friendly purification media for reinjecting water discharged after use in rural areas underground - Removal of contaminants from groundwater by using agricultural byproducts as a carbon source for denitrifying microorganisms