PARA DIGMA

Thermal engines, namely, block type thermal power stations for power generation

Devices for hydrogen production, namely, electrolysis cell for use in the manufacture of various ionic solutions

Air conditioning and ventilation apparatus as well as sanitation facilities, namely, urinals; lighting systems, namely, electric lighting fixtures and electric track lighting units; water piping parts, namely, mixer faucets for water pipes, heating systems composed primarily of tubes, pipes and pre-assembled manifolds through which cold or low temperature water circulates especially those compatible with solar technology and/or heat pumps; heat recovery devices consisting primarily of a ventilation apparatus with an exhaust heat exchanger; devices for household electricity supply and disposal, namely, hybrid energy storage plants and fuel cells; Water purification units, namely, small mechanical and biological devices for water purification, especially the purification of grey water

Rain water collection tanks made of concrete parts and plastic for household use