Centerchem recently promoted both Nick Ignazzi and William O’Brien. According to the company, Bill O’Brien, who celebrated his 13-year anniversary with Centerchem this month, was promoted to regional sales director. In this new role, O’Brien will be managing the sales team in the Western part of the United States as well as continuing to cover the southeast.   Nick Ignazzi has been promoted to technical sales manager. He has been with Centerchem for over six years and has grown in his responsi...