Class 037
Construction and Repair Services
Construction, including construction of hydroelectric power plants; pier breakwater building; underwater construction; interference suppression in electrical installations
Class 039
Transportation & Storage Services
Electricity distribution; distribution of energy; transport
Class 040
Treatment & Processing of Materials Services
Production of energy
Class 042
Computer & Software Services & Scientific Services
Technical project studies; engineering; research in the field of environmental protection; underwater exploration; technical research; quality control; construction drafting; consultancy in the field of energy-saving; surveying