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Find out how LogoTournament works How LogoTournament works Contest Entries by jjbq Return to Contest Return to Contest Withdrawn New #192 Withdrawn New #193 Withdrawn New #195 Withdrawn New #191 Withdrawn New #189 Withdrawn New #188 Withdrawn New #190 Withdrawn New #194 Discussion No comments yet.