leading.

Gases, also in liquid or dissolved form for commercial purposes, in particular protective and inert gases, treatment and reactive gases, welding, cutting and testing gases, gases for the electronics industry, gases for water purification and treatment, gases for the food technology sector, for raw material and metal production, in particular nitrogen, oxygen, carbon dioxide, carbon monoxide, hydrogen, hydrocarbon gases, hydrocarbon compounds, nitrogen oxides, ammonia, ozone, halogens, halogen compounds, boron, silicon and sulphur compounds as well as all rare gases and mixtures of all the aforementioned gases. Apparatus for industrial and commercial purposes for heating, steam generating, cooling, freezing, liquefying, for chemical reacting, drying and air conditioning; apparatus for the separation/fractionation of air into its compounds (air fractionation installations), gas purifiers and apparatus for the treatment of gases, namely apparatus for fractionation, purification, scrubbing, liquefaction and evaporation of gases and gas mixtures, of fractions of natural gas, of refinery gases and of natural gas; apparatus for the treatment of petrochemical substances, in particular for cracking of liquid and gaseous hydrocarbon mixtures; cracking and refinery furnaces; apparatus for the purification of gas, namely for purification of waste gases, in particular for the separation of sulphur; sewage installations and apparatus for water preparation; cryogenic apparatus such as cryostats (cooling, cold keeping apparatus and apparatus for cryogenic temperatures), and corresponding apparatus for the recovery of gas; burners, regulating and safety accessories for gas apparatus, in particular for burners; regulating and safety accessories for gas pipes, in particular apparatus related to gas supply installations. Technical development and technical planning and consulting related to industrial plants, big industrial working units and apparatus, gas supply and exploitation plants, sewage and water preparation installations; development and detailed technical engineering of processes for the liquefaction and fractionation of air, for the fractionation, purification, liquefaction and re-evaporation of technical gases and gas mixtures, of fractions of natural gas, of refinery gases and natural gas, for the cracking of liquid and gaseous mixtures of hydrocarbons, for the production of synthesis gas and synthetic natural gas, for the liquefaction and gasification of coal, for chemical reactions, for the treatment of water and waste water, for the disposal of gases/exhaust gases, for gas applications and the exploitation of gases in general and, in particular, for the use of protective and inert gases, of gases for treatment, reactive gases, gases for welding cutting, burning and heating, testing gases and gases for the electronics industry, for the food technology sector and for raw material and metal production; development of data processing programs for others for process technological working procedures, and for technical engineering and planning.