
Nice compact 20-page PDF Corporate Design Manual.
Excerpt:
Symbol and logo-type
The combination of the interstitial motif and the circular form resulted in a symbol consisting of two circles of different sizes that nearly touch each other. The symbol unites the regularity of the circle with a dynamic asymmetry, resulting from the difference in size and the diagonal arrangement.
The formal reduction confers succinctness, while the unusual combination of slanting axis, spatial proportion and distance ensures distinctiveness. By virtue of its geometric simplicity and abstraction, the symbol suggests precision, while at the same time conveying a sense of liberality and imelessness. (…)

Source:
evotecOAI - Corporate Design Manual