cleaning of buildings [exterior surface]; heating equipment installation and repair; installation and maintenance of photovoltaic installations; machinery installation, maintenance and repair; electric appliance installation and repair; charging of electric vehicles; rustproofing; repair of power lines; rental of portable power chargers; installation, maintenance and repair of inverters, batteries and electrical connection apparatus for solar energy systems; maintenance and repair of solar heating installations; installation, maintenance and repair of solar energy systems

generation of solar electricity; generation of electricity from wind energy; production of energy; production of renewable green energy; clean energy production; rental of electrical power generators; petroleum gas liquefaction; air deodorizing; recycling of waste and trash; water treating

Scientific, nautical, electric, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments; apparatus for recording, transmission or reproduction of sound or images; magnetic data carriers, recording discs; automatic vending machines and mechanisms for coin operated apparatus; cash registers, calculating machines, data processing equipment and computers; fire-extinguishing apparatus