TORAY is leading the way to a sustainable future with our innovative membrane technologies that produce clean water and recover valuable. resources. TORAY Reverse Osmosis and Nanofiltration spiral wound membrane elements have been produced since 1968, starting with cellulose acetate membrane elements. Today, the product line includes a full range of state-of-the-art polyamide composite membranes. The range of ultrafiltration elements, both in pressurized and submerged configurations, is employing a PVDF hollow-fiber, out-in concept and serves in numerous water treatment units around the world. Toray's membrane modules for membrane bioreactors are using flat-sheet PVDF membranes and can be configured for gravity-driven or suction-controlled operation. More than 30 years of production experience, thousands of well-performing membrane plants throughout the world, and ISO-9001 registered plants, in both Japan and the US, justify the excellent reputation of TORAY membrane products.