DAYTON (April 10)—The Dayco Division of Mark IV Industries Inc. has acquired J.I.T. Industries, an assembler of hydraulic hoses and components, in an effort to provide better service to customers in the South. J.I.T. employs about 70 and has locations in Orlando, Fla.; Knoxville, Tenn.; Thibodaux, La.; and Waco, Texas.