| Class | Class Name |
|---|---|
| 37 | cleaning of vehicles |
| 37 | cleaning of windows |
| 37 | cleaning services for automobiles and motorcycles |
| 37 | cleaning services relating to shoes and hats |
| 37 | clock and watch repair |
| 37 | clock maintenance |
| 37 | clock mending services |
| 37 | clock repair and maintenance |
| 37 | clothing repair |
| 37 | clothing repair [mending clothing] |
| 37 | commercial building construction |
| 37 | computer hardware maintenance and repair |
| 37 | computer installation services |
| 37 | computer maintenance services |
| 37 | computer repair services |
| 37 | condominium construction |
| 37 | construction |
| 37 | construction consultancy |
| 37 | construction consultancy |
| 37 | construction engineering |
| 37 | construction engineering services relating to buildings and transportation infrastructures and networks |
| 37 | construction information services |
| 37 | construction, maintenance and repair of fluid treatment plants |
| 37 | construction, maintenance and repair of pipelines |
| 37 | construction, maintenance and repair of waste water treatment plants |
| 37 | construction, maintenance and repair of water purification plants |
| 37 | construction, maintenance and repair of water reclamation and recycling plants |
| 37 | construction, maintenance and repair of water treatment plants |
| 37 | construction, maintenance and/or repair of ships and vessels |
| 37 | construction, maintenance, restoration and demolition of buildings |
| 37 | construction, maintenance, restoration, demolition and cleaning of buildings |
| 37 | construction, maintenance, restoration, demolition and cleaning of roads |
| 37 | construction management and supervision services |
| 37 | construction management services |
| 37 | construction of bridges and pedestrian bridges |
| 37 | construction of buildings |
| 37 | construction of buildings, roads, bridges and dams |
| 37 | construction of civil engineering structures |
| 37 | construction of commercial, industrial and governmental buildings |
| 37 | construction of factories |
| 37 | construction of foundations for toll roads, ring roads, highways, expressways and bridges |
| 37 | construction of harbours and berths |
| 37 | construction of infrastructures |
| 37 | construction of manufacturing plants for chemical engineering |
| 37 | construction of pedestrian bridges |
| 37 | construction of permanent buildings, bridges and roads |
| 37 | construction of pipelines and oil rigs |
| 37 | construction of ports |
| 37 | construction of power generating plants |
| 37 | construction of power plants |
