Fitz Chem Corp., Elmhurst, IL, has been appointed distributor by Wacker Polymer Systems in Illinois, Indiana, Wisconsin, Minnesota, and the Upper Peninsula of Michigan. Fitz Chem also has been appointed distributor for Solvay's line of performance chemicals in Illinois, Indiana, Wisconsin, Minnesota, and the Upper Peninsula of Michigan. Fitz Chem will distribute Solvay's line of precipitated barium sulfate products.