| Class | Class Name |
|---|---|
| 37 | road paving |
| 37 | road surfacing |
| 37 | roofing |
| 37 | roofing repair |
| 37 | roofing services |
| 37 | rug cleaning |
| 37 | rust removing |
| 37 | rustproofing |
| 37 | safe maintenance and repair |
| 37 | sanding |
| 37 | scaffolding |
| 37 | scaffolding services |
| 37 | security apparatus maintenance and repair |
| 37 | semi-conductor machinery repair and maintenance |
| 37 | services of electricians |
| 37 | ship construction |
| 37 | shipbuilding |
| 37 | shoe repair |
| 37 | shoe repair services |
| 37 | site formation, excavation, dredging, ground improvement |
| 37 | snow removal |
| 37 | spray painting for vehicles |
| 37 | steel structure construction |
| 37 | sterilisation of medical instruments |
| 37 | sterilization of medical apparatus and instruments |
| 37 | sterilization of medical instruments |
| 37 | sterilization of telephone |
| 37 | storage tank cleaning |
| 37 | street cleaning |
| 37 | strong-room maintenance and repair |
| 37 | supervision of building construction |
| 37 | supervision of building construction, excavation, land reclamation, demolition and building decoration |
| 37 | supervision of building work |
| 37 | supervision of construction |
| 37 | supervision of construction of buildings |
| 37 | supervision of construction projects |
| 37 | supervision of construction projects, excavation, land reclamation and demolition |
| 37 | supervision of infrastructure construction projects |
| 37 | swimming-pool maintenance |
| 37 | telecommunications apparatus installation and repair |
| 37 | telecommunications systems installation and repair |
| 37 | telephone disinfecting |
| 37 | telephone installation and repair |
| 37 | termite and pest control services |
| 37 | tile laying |
| 37 | tire balancing |
| 37 | tuning of musical instruments |
| 37 | tyre balancing |
| 37 | tyre fitting and puncture repair |
| 37 | tyre inflation services |
