Gravity Water Filtration System from Green-Tak offers a sustainable and durable water purification system, which requires no electricity or drainage requirements. This filtration system has a washable membrane with ultra-fine size pores of 10-30 nanometers that efficiently block bacteria and remove sediments ensuring clean drinking water. We bring Taiwanese engineering and global cer... https://www.green-tak.com/product-category/water-filtration/gravity-water-filtration/