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The main image is a 1-bit scan from the logo that i received printed on a letterhead (or a business card) many years ago but i don't have the original anymore.
On the website of the company http://www.emm-camping-car.com/ we can find only this small color image…
…that allows to guess that the baseline "Europe Matériel Maintenance" (that reminds Triplex) is in the same font than "EMM" (the M looks similar despite of its microscopical size) (it was more obvious on the printed document that i had). Unfortunately there is nowhere on the site any bigger logo.