UF membrane ,Food grade 304 stainless steel, compact and delicately designed,easily installed Features and advantages:1. Pure physical filtration ... , impurities,rust, bacteria,algae and macromolecule organism etc.harmful substances,but minerals and microelemetns are remained.2. Automatic ... uselife.3. No need power ,pressure-added and electricity, safe and energy-saving.Purification works based on tap ...