WPC Treatment Co., Inc. @Headquarters 2909 Oregon Court, Unit C-2 Torrance, CA 90503 Tel 1.310.782.8647 Fax 1.310.782.7624 @MID-WEST office 4012 Crosby Street, Rockford, IL 61107 Tel 1.815.397.9432 Fax 1.815.394.1592