Machine tools for processing, cutting and assembling windows, doors, window frames, door frames, sashes and casements; welding machines, electric; machine tools for plastic processing; soldering apparatus, electric; threading machines; die-cutting and tapping machines; milling machines; notchers [machine tools]; guides for machines; engraving machines; blades [parts of machines]; woodworking machines; metalworking machines; handling machines, automatic [manipulators]; molding machines; drilling machines; cutting machines; shredders [machines] for industrial use; machines and apparatus for cleaning, electric; lifting apparatus; conveyors [machines]; belts for conveyors; belt conveyors; roller conveyors; wet and dry vacuum cleaners; filtering machines; packing machines; wrapping machines; compressors for gases; pumps for the extraction of gases (machines); condensing installations; gas converters; suction valves for gas compressors; pneumatic pumps for the suppluy of liquefied gases; blowing machines for the compressors, exhaustion and trasport gases.;
Extraction of gas; installation of gas pipelines; installation of pipe systems for conducting of gases; installation of gas supply and distribution apparatus; fueling of hydrogen gas for vehicles; construction, installation, maintenance and repair of gas distribution and refuelling systems, installations, units and equipment; construction, installation, maintenance and repair of gas treatment, compression and supply systems, installations, units and equipment; construction, installation, maintenance and repair of gas drying, cooling and purification systems, installations, units and equipment; construction, installation, maintenance and repair of gas storage systems, installations, units and equipment; construction, installation, maintenance and repair of gas transport systems, installations, units and equipment.;