| Valor | Categoría | Casos | |
|---|---|---|---|
| 1 | INCONTEC | 10 |
5.4%
|
| 2 | BUREAU VERITAS | 100 |
54.3%
|
| 3 | SGS | 42 |
22.8%
|
| 4 | OTRO | 32 |
17.4%
|
| 0 | 3572 |