CLEVELAND – Five northeast Ohio companies have been recognized by a national magazine as some of the fastest-growing private companies in the country. Inc. Magazine’s top 500 list for 2012 includes these companies in the Cleveland-Akron area: #236: Leandog (Cleveland) #365: Z Squared Media (Cleveland) #403: Advanced Chemical (Middleburg Heights) #408: Slaterock Safety (Medina) #495: […]