| Higher category | |
| 11 | agriculture-and-forestry fisheries |
| 12 | metal |
| 13 | inorganic chemistry |
| 14 | organic chemistry |
| 15 | fiber |
| 21 | prime motor |
| 22 | machine element |
| 23 | atomic power |
| 24 | chemistry industry facilities |
| 25 | machining tool |
| 26 | transportation |
| 27 | construction |
| 28 | hygiene |
| 29 | precision machine |
| 30 | sundry goods |
| 31 | wrapping |
| 32 | pollution prevention |
| 33 | ocean development |
| 34 | space development |
| 35 | new energy |
| 36 | labor saving |
| 37 | safety |
| 41 | material |
| 42 | electronic |
| 43 | electric power |
| 44 | communication |
| 45 | information processing |
| 46 | measurement |