| Class | Class Name |
|---|---|
| 37 | hire of construction apparatus |
| 37 | hire of electric appliances and apparatus for use in civil engineering construction |
| 37 | hire of road construction apparatus |
| 37 | hiring and rental of construction equipment and machinery |
| 37 | hiring of drilling platforms |
| 37 | house cleaning |
| 37 | housekeeping services [cleaning services] |
| 37 | housing construction |
| 37 | housing development (construction) |
| 37 | hydraulic fracturing services |
| 37 | industrial plant construction services |
| 37 | information services relating to building |
| 37 | information services relating to building construction |
| 37 | information services relating to construction, maintenance, cleaning, renovation and repair of buildings and civil engineering works |
| 37 | information services relating to construction provided via data processing systems |
| 37 | information services relating to the construction of permanent or temporary buildings |
| 37 | information services relating to the installation of in-house audio/video systems |
| 37 | information services relating to the installation, repair and maintenance provided on-line from a database on a computer network |
| 37 | information services relating to the maintenance and repair of aircraft and aerospace products |
| 37 | information services relating to the maintenance of in-house audio/video systems |
| 37 | information services relating to the repair or installation of electronic, computer and telecommunication apparatus |
| 37 | information services relating to the repair or installation of electronic, computer and telecommunication instruments and apparatus |
| 37 | information services relating to the repair or installation of telecommunication apparatus, provided on-line from a computer database |
| 37 | inspection of vehicles prior to maintenance |
| 37 | inspection of vehicles prior to repair |
| 37 | inspection of vehicles prior to repair or maintenance |
| 37 | installation and maintenance of burglar alarm surveillance systems |
| 37 | installation and maintenance of card access systems |
| 37 | installation and maintenance of communal antenna broadcast distribution systems |
| 37 | installation and maintenance of communications networks, systems and equipment |
| 37 | installation and maintenance of computer hardware |
| 37 | installation and maintenance of computerized security surveillance systems |
| 37 | installation and maintenance of door phone systems |
| 37 | installation and maintenance of electricity systems |
| 37 | installation and maintenance of electronic monitoring systems relating to buildings |
| 37 | installation and maintenance of emergency nurse call systems for use in hospitals |
| 37 | installation and maintenance of environmental monitoring systems |
| 37 | installation and maintenance of fire alarm surveillance systems |
| 37 | installation and maintenance of intercom systems |
| 37 | installation and maintenance of multiplex closed-circuit TV systems |
| 37 | installation and maintenance of parking control systems |
| 37 | installation and maintenance of plumbing and drainage systems |
| 37 | installation and maintenance of public address systems |
| 37 | installation and maintenance of satellite TV systems |
| 37 | installation and maintenance of telecommunication apparatus |
| 37 | installation and maintenance of telephone systems |
| 37 | installation and maintenance of telephone-linked video surveillance systems |
| 37 | installation and maintenance of video systems |
| 37 | installation and maintenance of water pipe and tap |
| 37 | installation and maintenance of wireless automatic gate systems |
