Construction consultation; Building construction information; Building construction; Residential and commercial building construction; Installation, maintenance and repair of computer hardware; Interference suppression services for electrical apparatus; Providing information in the field of home renovations and repairs; repair of power lines; Rental of construction equipment; Factory construction; Warehouse construction and repair; Pipeline construction and maintenance; Burner maintenance or repair; Heating equipment installation and repair; Electric appliance installation and repair; Office machines and equipment installation, maintenance and repair; Installation and repair of air conditioning apparatus; Machinery installation, maintenance and repair