Class 037
Construction and Repair Services
Installation, commissioning, maintenance, refitting and repair of water supply installations and of water-chemical and water-technical installations, machines and apparatus for treating water, purifying water and waste water, and of mobile sewage purification installations, container sewage purification installations, compact sewage purification installations and ships' sewage purification installations; Constructive management and consultancy relating to water-technical installations, mobile sewage purification installations, container sewage purification installations, compact sewage purification installations and ships' sewage purification installations.
Class 042
Computer & Software Services & Scientific Services
Process engineering and constructive planning, design and project management, and process engineering consultancy and management relating to water-technical installations, mobile sewage purification installations, container sewage purification installations, compact sewage purification installations and ships' sewage purification installations; Scientific and industrial research and development, and creating technical process models for water-technical installations, mobile sewage purification installations, container sewage purification installations, compact sewage purification installations and ships' sewage purification installations.