Gravity Water Filtration System


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Gravity Water Filtration System | RO Drinking Water System & Water Purifier Manufacturer - TIA, Green-Tak

Located in Taiwan, TIA Enterprise Co., Ltd., since 2012, is a professional Gravity Water Filtration System | RO system and water purifier manufacturer. Main products, including reverse osmosis (RO) system, hydrogen water system, water purifier, water filters, water dispensers, water coolers, water boiler, stainless steel faucets, etc.

Green-Tak RO water purifier manufacturer in Taiwan - TIA Enterprise Co., Ltd. All raw materials and filter medias are verified by international certification, such as NSF, SGS, TUV, INTERTEK, CE, WATER QUALITY, etc. All water systems and water purifiers are 100% in-house quality tested before shipment, as well as TUV and D-U-N-S certified.

TIA, Green-Tak has been offering customers high-quality water purifiers and RO systems since 2012, both with advanced technology and 10 years of experience, TIA, Green-Tak ensures each customer's demands are met.

Gravity Water Filtration System

Surface Water Filtration System

Rain Water Filtration System
Rain Water Filtration System

Green-Tak gravity water filtration system is no power required, no waste of drain water, washable and long lifespan membrane, big flow rate, high filtration performance, and lower maintenance cost. The system is with patented gravity membrane, pore size is 10 to 30 nanometers, can block bacteria, such as Vibrio Cholera, to prevent from some diseases. The System is the best choice for rain water, river water, and other surface water to purify for domestic water use for washing and even for potable water.


  • Ideal for outdoor surface water purification, economy model.
  • Remove bacteria, chlorine, dirt, rust, mud, organic chemicals and other impurities in the water.
  • Remove bacteria such as Vibrio Cholerae, E. Coli...etc.
  • Cost-saving for washable membrane and long lifespan.
  • No power needed no waste of drain water, low maintenance cost.


NH-12, NH-20, NV-30, NS-400 best models of
Gravity Water Filtration System
Rain Water | River Water | Lake Water

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