provision of business management services; business management of building construction projects; business management supervision of subcontractors; business information services relating to construction and design; estimating contracting work for engineering contracting; business contract analysis; preparing business reports relating to architecture and building construction | construction management and supervision of subcontractors; building construction services; repair and maintenance of buildings; and information, consultancy and advisory services relating thereto | mechanical engineering; electrical engineering; architectural design and consultancy services; interior design services; design for others in the field of building construction; conducting of feasibility studies for building construction projects