| 54242 | General construction services of long distance communication and power lines | |
| 54241 | General construction services of long distance pipelines | |
| 54260 | General construction services of mines and industrial plant | |
| 54112 | General construction services of multi-dwelling buildings | |
| 54111 | General construction services of one- and two-dwelling buildings | |
| 54290 | General construction services of other engineering works n.e.c. | |
| 54129 | General construction services of other non-residential buildings | |
| 54270 | General construction services of outdoor sport and recreation facilities | |
| 71335 | General liability insurance policies, underwriting of | |
| 71335 | General liability insurance services | |
| 85330 | General maintenance of commercial buildings | |
| 85330 | General maintenance of dwellings | |
| 85330 | General maintenance of industrial buildings | |
| 85330 | General maintenance of office buildings | |
| 83111 | General management consulting services | |
| 86423 | General mechanical engineering services | |
| 93121 | General medical services | |
| 91141 | General personnel affairs, administrative services related to | |
| 91141 | General personnel affairs, operational services related to | |
| 91141 | General personnel services for the government | |
| 87159 | General purpose machinery n.e.c., maintenance and repair of | |
| 92210 | General secondary education services | |
| 91149 | General services for the government n.e.c., other | |
| 87152 | Generators, electric, maintenance and repair of | |
| 87152 | Generators, electric, rewinding of | |
| 87110 | Generators, steam, maintenance and repair of | |
| 83510 | Geochemical consulting services relating to the location of gas | |
| 83510 | Geochemical consulting services relating to the location of ground water | |
| 83510 | Geochemical consulting services relating to the location of mineral deposits | |
| 83510 | Geochemical consulting services relating to the location of oil | |
| 83510 | Geological consulting services relating to the location of gas | |
| 83510 | Geological consulting services relating to the location of mineral deposits | |
| 83510 | Geological consulting services relating to the location of oil | |
| 83510 | Geological, geophysical and other prospecting services | |
| 83510 | Geophysical consulting services relating to the location of gas | |
| 83510 | Geophysical consulting services relating to the location of ground water | |
| 83510 | Geophysical consulting services relating to the location of mineral deposits | |
| 83510 | Geophysical consulting services relating to the location of oil | |
| 83393 | Geotechnical engineering services for manufacturing constructions | |
| 83393 | Geotechnical engineering services for mining constructions | |