CHEMTOOL INC · CRYSTAL LAKE, ILActiveMATHEWS CO · CRYSTAL LAKE, ILActiveMILLENNIUM ELECTRONICS INC · CRYSTAL LAKE, ILActiveTC INDUSTRIES INC · CRYSTAL LAKE, ILActivePRECISION DORMER LLC · CRYSTAL LAKE, ILInactive
Source: U.S. EPA Toxic Release Inventory. Registration does not by itself indicate a health hazard.