| ECA GROUP | EFFECTIF | ECA | ECA CSIP | ECA CNAI | OD ECA | ECA FAROS | ECA EN | ECA SINTERS | SSI | ECA SINDEL | TRITON | | 600 | Workspace | 237 | 13 | 59 | 2 | 42 | 100 | 95 | 20 | 23 | 9 | | | | 300 | Executives and higher professions
| 120 | 10 | 33 | | 32 | 52 | 40 | 2 | 4 | 7 | | 145 | Technicians and supervisors
| 46 | 2 | 23 | 2 | 4 | 26 | 25 | 1 | 16 | | | 79 | Employees | 45 | 1 | 3 | | 4 | 8 | 10 | 3 | 3 | 2 | | 76 | Workers | 26 | | | | 2 | 14 | 20 | 14 | | |
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