| Value | Category |
|---|---|
| -9 | |
| -7 | Does not apply |
| 1 | Parent company |
| 2 | Client firms/suppliers |
| 3 | Equipment and machinery supplier |
| 4 | Business or industry association |
| 5 | Trade fairs |
| 6 | Study tours |
| 7 | Consultants |
| 8 | Universities, public institutions |
| 9 | Newspaper/TV/other medias |
| 10 | Others |