Condensers (in particular for air); compressors, pumps, compactors; expansion machines and turbines; butterfly valves being parts of machines and process flow distributors; mechanical apparatus for liquefying and breaking down air, mechanical apparatus/machines for producing, separating, liquefying industrial gases and gas mixtures, refinery gases and natural gas, included in this class; fittings for gas technology machines and machine components, in particular pressure regulators, closure, relief and non-return valves; air and hydrocarbon gas generators and apparatus for producing air and hydrocarbon gas; apparatus for liquefying and/or separating gases and gas mixtures, in particular air and hydrocarbon gases, gas extraction apparatus, gas separators

Apparatus for steam generating, refrigerating, ventilating, fumigating and gas supply, and gas supply installations; evaporators; air or hydrocarbon gas generators being membrane apparatus and distillation apparatus for generating air or hydrocarbon gas; gas regulating apparatus and safety apparatus for preparing an available gas supply for use, mainly consisting of a combination of measuring, switching and adjustment components; regulating and safety accessories for gas apparatus and gas pipes; gas purifiers, gas scrubbers, adsorbers and adsorber installations, diaphragm gas separators; mechanical apparatus/machines for purifying and evaporating industrial gases and gas mixtures, refinery gases and natural gas

Research in the field of gas separating and engineering in connection therewith; technological consultancy and engineering in cryogenic engineering, chemistry and petrochemistry, gas application technology, machine and installation construction; technical planning and design, basic and detailed engineering (design and planning), and modification in connection with gas technology, cryogenic engineering, chemical and petrochemical apparatus and installations