IC 037. US 100 103 106. G & S: Building construction, particularly in the area of energy supply; construction of installations in the field of cleanroom, air conditioning, energy, heat and environmental technology; installation, maintenance, servicing and repair of start-up of machines, control systems, electronic installations and industrial installations for the production and supply of energy, electricity, district heating and compressed air, the ventilation and environmental protection of contaminated manufacturing plants, wastewater purification, wastewater treatment and sewage treatment, sludge treatment and flue gas cleaning, and for nuclear installations; maintenance of industrial buildings; remediation of nuclear contaminated sites, namely, hazardous waste disposal services; hazardous waste disposal services in the nature of the decommissioning and disposal of nuclear installations used for nuclear and fossil fueled energy production; installation of energy systems for use of renewable energies, particularly biomass, biogas, mine gas, geothermal energy and wind energy; construction consultation

IC 039. US 100 105. G & S: Transport and distribution of energy, electricity, gas, thermal and district heat, compressed air and water; transport of gases, liquids and solids by pipeline; energy supply of end customers, particularly by delivering thermal heat

IC 042. US 100 101. G & S: Engineering; consulting in the field of architecture and chemistry services, namely, research in the field of chemistry and chemistry consultation; physics research; technical monitoring of production processes in power plants for quality control purposes; technical consultancy, namely, inspection, supervision, verification and quality control to assure compliance with industry standards in the field of power related matters, namely, power generation and power plants; building and construction drafting and construction consultancy; surveying; technical consultancy in the field of power related matters, namely, power plant engineering; technical expert opinions, namely, engineering surveys in the field of power generation, namely, conducting power generation plant engineering surveys; material testing and quality control for others; chemical and physical analysis of waste and residues from waste incineration plants, power plants and water treatment plants; computer programming; all of the aforementioned services particularly in the field of power engineering, energy supply, as well as for energy supply companies and for companies receiving energy, electricity and process heat; technical consultancy for the disposal of power plants and the disposal of residues of waste incinerating plants; technical planning, namely, design of energy systems for use of renewable energies, particularly biomass, biogas, mine gas, geothermal energy and wind energy