37 Construction, repair and maintenance of buildings; cleaning and maintenance of buildings (interior); maintenance of building energy consumption reduction system; repair or maintenance of construction machines and apparatus; construction; construction and maintenance services relating to civil engineering; installation, maintenance and repair of burglar alarms; maintenance and repair of control systems for radio systems and networks; building construction supervision services for real estate projects; maintenance services relating to interior installations of buildings and offices; building maintenance services; office machines and equipment installation, maintenance and repair; building construction supervision services relating to shopping centers, industrial complexes, office buildings, residential buildings and other real estate developments; repair of hand-operated tools; construction, maintenance and renovation of property; installation, maintenance and repair of remote control apparatus; installation/maintenance and repair services relating to telecommunication machines and implements; installation, maintenance and repair of electronic control apparatus; construction services; installation, maintenance and repair of computer hardware