| 62381 | Mail order retail trade services of snowmobiles and related parts and accessories | |
| 62391 | Mail order retail trade services of solid fuels and related products | |
| 62327 | Mail order retail trade services of spices | |
| 62355 | Mail order retail trade services of sports goods (incl. bicycles) | |
| 62351 | Mail order retail trade services of stationery | |
| 62325 | Mail order retail trade services of sugar confectionery | |
| 62374 | Mail order retail trade services of surgical devices | |
| 62374 | Mail order retail trade services of surgical instruments | |
| 62342 | Mail order retail trade services of tapes | |
| 62327 | Mail order retail trade services of tea | |
| 62342 | Mail order retail trade services of television equipment | |
| 62328 | Mail order retail trade services of tobacco products | |
| 62375 | Mail order retail trade services of toilet soaps | |
| 62353 | Mail order retail trade services of toys | |
| 62356 | Mail order retail trade services of travel accessories | |
| 62364 | Mail order retail trade services of varnishes | |
| 62321 | Mail order retail trade services of vegetables | |
| 62363 | Mail order retail trade services of wallpaper | |
| 62354 | Mail order retail trade services of watches | |
| 62346 | Mail order retail trade services of wickerwork | |
| 62331 | Mail order retail trade services of yarns | |
| 64224 | Mail, transportation of, by railway on behalf of foreign postal authorities | |
| 64224 | Mail, transportation of, by railway on behalf of national postal authorities | |
| 68119 | Mailboxes, rental of | |
| 85950 | Mailing list compilation and mailing services | |
| 85950 | Mailing of envelopes | |
| 41413 | Maillechort, unwrought | |
| 48490 | Mainsprings, clock or watch | |
| Maintenance (see also under Repair) | |
| 87159 | Maintenance and repair of agricultural equipment | |
| 87159 | Maintenance and repair of agricultural machinery | |
| 87159 | Maintenance and repair of agricultural tractors | |
| 87149 | Maintenance and repair of aircraft | |
| 87149 | Maintenance and repair of aircraft engines | |
| 87159 | Maintenance and repair of apparel production machinery | |
| 87159 | Maintenance and repair of beverage processing machinery | |
| 87110 | Maintenance and repair of boilers for central heating | |
| 87110 | Maintenance and repair of boilers for nuclear reactors | |
| 87153 | Maintenance and repair of cellular phones | |
| 87154 | Maintenance and repair of checking instruments | |