ZennValve, LLCLogo Design Contest Logo Design Contest Contests / ZennValve, LLC ZennValve, LLC has selected their winning logo design. For $575 they received 266 designs from 50 different designers from around the world. Find out how LogoTournament works How LogoTournament works Contest Entries by CreativeLogic Return to Contest Return to Contest Withdrawn 7th #219 Withdrawn New #218 Withdrawn New #213 Withdrawn New #212 Discussion No comments yet.