Computers and Electronics Manufacturing, Hydroelectric and tidal energy production equipment, parts and accessories, Environmental services, renewable energies, Energy, Environment, Pumping systems, sewage treatment plant, Water intake screen cleaning equipment for hydroelectric power stations, Sewage and effluent treatment plant, complete, Pumping systems, sewage and waste water, prefabricated, Comminutors, sewage treatment, Water, sewage and industrial effluent treatment plant and equipment