| 85230 | Maintenance of fire alarms | |
| 85990 | Maintenance of gardens | |
| 69120 | Maintenance of gas meters | |
| 96422 | Maintenance of national parks | |
| 96422 | Maintenance of nature reserves | |
| 67610 | Maintenance of other artificial inland waterways | |
| 85230 | Maintenance of security systems | |
| 67610 | Maintenance of ship canals | |
| 69210 | Maintenance of water meters | |
| 96421 | Maintenance of zoological gardens | |
| 54210 | Maintenance services, road | |
| 85123 | Maintenance workers, supplying of, for work assignments | |
| 23150 | Maize (corn), hulled, whether or not sliced or kibbled | |
| 23150 | Maize (corn), pearled | |
| 23150 | Maize (corn), roasted or swollen as breakfast food, ready for consumption | |
| 23150 | Maize (corn), rolled or flaked (excl. prepared breakfast foods) | |
| 39130 | Maize gluten | |
| 01120 | Maize in sheaves, cobs or threshed | |
| 01120 | Maize not husked or otherwise worked | |
| 39130 | Maize steeping liquors | |
| 01120 | Maize, cut before maturity, complete with husks | |
| 01120 | Maize, hybrid, seed | |
| 23150 | Maize, kibbled | |
| 01120 | Maize, unmilled | |
| 37221 | Majolica tableware and kitchenware | |
| 37221 | Majolica toilet articles (excl. scent sprays) | |
| 97220 | Make-up counselling services | |
| 35323 | Make-up products (excl. medicaments) | |
| 34240 | Malachite, artificial | |
| 14210 | Malachite, natural (copper ore) | |
| 16310 | Malachite, precious, unworked or simply sawn or roughly shaped, whether or not graded, not strung, mounted or set | |
| 38220 | Malachite, precious, worked other than simply sawn or roughly shaped, whether or not graded, not strung, mounted or set | |
| 24212 | Malaga | |
| 34160 | Malathion (ISO) | |
| 34140 | Maleic acid and its salts and esters | |
| 34140 | Maleic anhydride | |
| 89310 | Malleable iron, casting of | |
| 38360 | Mallets for percussion musical instruments | |
| 38440 | Mallets, croquet or polo | |
| 48130 | Mallets, dental | |