| cat.-No. | 2nd category level | results |
|---|---|---|
| 1602 | compressed air dryers | 8 |
| 1604 | compressed air filtration | 1 |
| 1603 | compressed air tanks | 7 |
| 1601 | compressors | 157 |
| 1607 | other compressed air technology | 12 |
| 1606 | spare parts for compressed air technology | 1 | 1600 | all order by entry date descending | 746 |