Ziebart International Corp. has promoted Thomas Bowler to director of U.S. retail operations, where he will oversee Ziebart’s 11 corporate-owned stores, handling all of their day-to-day operations, leading the charge on decisions for the stores and working with store managers on sales. Bowler started at Ziebart in 2016 as a product sales and technical support specialist. He most recently was a regional sales manager.