Class 007: Industrial water and waste treatment equipment, filtration systems, containers, pressure vessels; Class 011: Water purification and wastewater treatment installations; Class 037: Installation, maintenance, and repair of treatment systems; cleaning services, namely, mechanically removing scale and sludge from tubes in steam generators in nuclear power plants; repair or maintenance of nuclear power plants; provision of information relating to the repair or maintenance of nuclear power plants; consulting services in the field of repair and maintenance of nuclear energy power plants; cleaning of surfaces for nuclear waste decontamination; Class 040: Waste treatment and material processing services; nuclear waste treatment; treatment of water used in nuclear reactors; Class 042: Engineering, design, and technology development services in the field of treatment of nuclear wastewater
