| 1944 | Foundation of Salmon & Cia. |
| 1960 | Oporto branch office |
| 1966 | Present facilites in Lisbon |
| 1981 | Salmon Electrónica |
| 1983 | Omya Mineral Portuguesa - joint venture |
| 1985 | Ashland Química Portuguesa - joint venture |
| 1993 | Present facilites in Oporto |
| 1994 | 50th anniversary |
| 1997 | ISO 9002 certification |
| 2003 | ISO 9001:2000 certification |
