Membranes, membrane modules, filter cartridges, and parts thereof for preparation, treatment, filtration, recycling, purification, separation and cleaning of fluid, water, drinking water, and waste water for private, municipal and industrial purposes; modular apparatus and appliances containing membranes for preparation, treatment, filtration, recycling, purification, separation and cleaning of fluid, water, drinking water, and waste water for private, municipal, and industrial purposes; water treatment equipment, namely, reverse osmosis, nanofiltration, ultrafiltration and microfiltration units

Scientific and industrial research services in the field of preparation, treatment, filtration, recycling, purification, separation and cleaning of fluid, water, drinking water and waste water