Engineering, namely technical development in the field of construction materials, containers, pipes, valves, fastening and assembly materials, silos, pumps for heating installations, motors and engines, motor-driven tracking devices, apparatus for solar power generation, apparatus and installations for converting and storing sunlight, fuel cells, heating installations, solar collectors, apparatus for steam generating, cooking, drying, ventilating purposes, weakly concentrating reflectors, air-conditioning and ventilation apparatus, heat regenerators and solar roofs, in particular with regard to increasing the energy efficiency thereof
Es justo lo que estoy haciendo.- ¿ La guerra nuclear?tmClass tmClass