| 54640 | Gas fittings, installation of | |
| 69120 | Gas meters, maintenance of | |
| 69120 | Gas meters, reading of | |
| 83510 | Gas, geochemical consulting services relating to the location of | |
| 83510 | Gas, geological consulting services relating to the location of | |
| 83510 | Gas, geophysical consulting services relating to the location of | |
| 91132 | Gas, natural, administrative services related to | |
| 65122 | Gas, natural, coastal water transportation of, in special tankers | |
| 65222 | Gas, natural, inland water transportation of, in special tankers | |
| 86210 | Gas, natural, liquefaction of, for transportation | |
| 86210 | Gas, natural, regasification of, for transportation | |
| 65122 | Gas, natural, transoceanic water transportation o,f in special tankers | |
| 64122 | Gas, natural, transportation of, by railway in special tank cars | |
| 64232 | Gas, natural, transportation of, by road in special tank trucks | |
| 64310 | Gas, natural, transportation of, via pipeline | |
| 83510 | Gas, scientific consulting services relating to the location of | |
| 62391 | Gaseous fuels and related products, mail order retail trade services of | |
| 62191 | Gaseous fuels and related products, non-specialized store retail trade services of | |
| 62491 | Gaseous fuels and related products, other non-store retail trade services of | |
| 62591 | Gaseous fuels and related products, retail trade services of, on a fee or contract basis | |
| 62291 | Gaseous fuels and related products, specialized store retail trade services of | |
| 61191 | Gaseous fuels and related products, wholesale trade services of, except on a fee or contract basis | |
| 61291 | Gaseous fuels and related products, wholesale trade services of, on a fee or contract basis | |
| 69120 | Gaseous fuels, distribution of through mains | |
| 65222 | Gases, bulk, inland water transportation of, in special tankers | |
| 67220 | Gases, bulk, storage of | |
| 64122 | Gases, bulk, transportation of, by railway in special tank cars | |
| 64232 | Gases, bulk, transportation of, by road in special tank trucks | |
| 67220 | Gases, bulk, warehousing of | |
| 96111 | Gathering and cataloguing noises and sounds for use in films | |
| 96111 | Gathering and cataloguing noises and sounds for use in radio | |
| 96111 | Gathering and cataloguing noises and sounds for use in theatre | |
| 84420 | Gathering of news for audio-visual media | |
| 84410 | Gathering of news for printed media | |
| 83510 | Gelolgical consulting services relating to the location of ground water | |
| 97990 | Genealogical research services | |
| 91138 | General administrative economic, commercial and labour affairs related services | |
| 85330 | General cleaning of commercial buildings | |
| 85330 | General cleaning of dwellings | |
| 85330 | General cleaning of industrial buildings | |