The company E.S.T.T.M & CO (Etudes-Services-Travaux-Technique-Médicales et compagnie) is an SME created in April 1990, managed since 2011 by Mr. NGAKA Tika-Sango, biomedical engineer trained in Germany, Canada and France.

Originally, ESTTM focused on two (2) activities, one of which concerns:

The purchase, resale, installation and maintenance of medical equipment.

And for the other:

The building which included the design, construction of building for medical use and then industrial and residential use.

In 1993, the security activity was added to the building sector. It includes fire protection and detection, personal safety, electronic security installations, security monitoring television, video surveillance, access controls, transmission and centralization of alarms by radio, people and electromagnetic badges.