The logo must include the letters ads (lowercase letters). We want to clearly distinguish ourselves with our new logo from our competitors, that there should be NO (!!) similarities to logos of the following companies:
The logo should have a high recognition value, must easily to read and illustrate both as a logo on a website, as well as business letters, cars and more that it has been certified by an authorized, serious and reputable site. We like logos which looks unique, so play with the letters "zds" and make them unique. It must look clean and serious.
1) Please NO (!!) logos with circles, rectangles, triangles, brackets, squares or checkmarks
2) The logo must offer the possibility to specify the certified standard according to the customer like the examples in the attachment. The standards are: DIN EN ISO 9001 and DIN EN ISO 14001. A possibility to display an ID (like customer number) would be also needed.
3) Please no multiple colors (e.g. "z" red, "d" blue and "s" black or something else)