Rental and lending of heat pumps and energy recovery apparatus (mainly consisting of recuperative furnaces, expansion machines, compressors, pumps, control mechanisms and pipes), rental and lending of welding and cutting burners, devices for injecting gas in any media for cooling and/or atmosphere creating, of plants/apparatus for treating waste water; information for personnel from other companies in all fields pertaining to protective gas welding, refrigeration and air-conditioning, heat pumps, energy recovery installations, waste water technology and operating waste water treatment plants; technical consultancy in the field of the adding of solid materials and gases to molten metals, technical consultancy for specialists from other companies in the field of protective gas welding, technical consultancy in the development of processes for the separation and liquefaction of gases, the splitting of hydrocarbons and the processing of the split products, for welding technology and applications relating to gases; technical consultancy for special waste water treatment processes; technical consultancy in the purification of gases for welding technology and applications relating to gases.

Training and education for personnel from other companies in all fields pertaining to the use of industrial gases, protective gas welding, process engineering, refrigeration and air-conditioning, heat pumps, energy recovery installations, waste water technology and operating waste water treatment plants; training, education of people of other companies, namely of refrigeration specialists, drivers of special-purpose vehicles and material handling vehicles and of salespersons; providing of training for training personnel from other companies.

Development/basic engineering and design of industrial plants, refrigeration plants, machine/manufacturing plants, heat pump installations, energy recovery apparatus (mainly consisting of recuperative furnaces, expansion machines, compressors, pumps, control mechanisms and pipes), ventilating and air-conditioning installations, cooled and noncooled equipment for retail establishments/shops, refrigerating and freezing cells, mobile drive systems (consisting of a primary energy source, mainly a combustion engine or an electric motor, and a energy converter, mainly a hydrostatic gear), materials handling vehicles/industrial trucks, installations for gas storage and gas supply for protective gas welding (mainly consisting of gas vessels, also for liquefied gases, evaporators, pressure gas bottles, pumps, armatures and pipes), welding and cutting burners, devices for injecting gas in any media for cooling and/or atmosphere creating, apparatus for refrigerating and/or storing objects at low temperatures using cold or liquefied gases and cold-crushing installations, plants/apparatus for purification of waste water as well as the controlling equipment thereof, devices for introducing oxygen into waste water, devices for protective gas welding and installations for adding solid materials or gas to molten metals; research and development works as well as services of an engineer in the aforesaid fields; preparing computer programs for others for commercial accounting and statistics, for process engineering operations, for engineer technical planning and for materials management; preparing of technical expertises and studies, in particular for protective gas welding and waste water problems; technical consultancy in the field of the use of injection lances and the construction of drive systems and control devices materials; testing for others; checking of machines for others, in particular testing of mobile drive systems and material handling vehicles/ industrial trucks; executing tests for others in the fields of welding, protective gas welding, metal annealing, cold crushing, deflashing of plastic mouldings, refrigeration and air-conditioning, heat application and energy recovery, purifying and treating of waste water, adding solid materials and gases to molten metals and in using injection lances; information for personnel from other companies in all fields pertaining to the use of industrial gases and process engineering.

Dispensers, stands and holders for towels and paper rolls, soap dispensers (other than fixtures), dispensers for liquid soap and disinfectants for hygiene purposes.

Opticians' services and services of an expert on acoustic hearing apparatus.

Heating, steam generating, cooling and reacting apparatus/reactors included in this class; heating, melting and heat treating furnaces, in particular gas and burner supported ones of all kinds as well as components of those; burners, in particular gas burners of all kinds, for heating, preparation, transforming of materials, for combustion, after combustion of materials and substances, for welding, cutting, brazing and treating; apparatus of natural gas crude oil/petrol and coal chemistry included in this class, in particular processing/reacting furnaces, pyrolysis furnaces, decomposition furnaces, other chemical and petrochemical reactors, in particular thermally and catalytically working reactors, crackers and cracking apparatus, tube/coil furnaces, fractioning columns, olefin production apparatus, in particular ethylene apparatus, apparatus/reactors for preparation and reacting aromates and naphtenes, natural gas liquefiers, steam reformers, synthesis gas apparatus, hydrogen and ammonia producers included in this class; gas purifiers, gas separators, gas washing/scrubbing units, adsorbers and adsorber apparatus, included in this class, distillation apparatus and columns, gas condensers, evaporators, heat exchangers, fluid/gas heaters and coolers, regenerators, gas scrubbing columns; apparatus for the liquefaction and gasification of coal; apparatus for fertilizer production, apparatus for production of pharmaceuticals, apparatus for plastics productions, included in this class; apparatus of environment protection, waste and garbage technology, included in this class, in particular combustion/incineration apparatus, energy gaining/recovery apparatus, waste combustion apparatus, waste fermentation apparatus, composting apparatus, waste preparation apparatus, included in this class; waste water purification/sewage disposal apparatus, water preparation apparatus; refrigerating and freezing apparatus, cooling apparatus and heat pumps; valves and armatures for gases as parts of gas supply apparatus (also non metallic), sieves and filters for gas or liquid gases respectively; regulating and safety accessories for gas apparatus, gas apparatus for gas delivery/supply, comprising gas storage vessels/tanks, cocks, regulators and manifolds, evaporators, safety components included in this class; apparatus for the liquefaction and separation of air, rectification apparatus/columns, apparatus for the separation, purification, scrubbing, liquefaction and re-evaporation of technical gases and gas mixtures, refinery gases and natural gas as well as apparatus for the separation, purification, evaporation of crude oil/crude oil fractions included in this class; apparatus for generating process gases/operating gases and synthetic natural gas; cryostats, cooling apparatus for the preparation of deep cold temperatures, helium supply and re-liquefaction apparatus.