Ketchum & Walton Co. - Chicago - Vernon Hills, Illinois

Optimal Design Co. - Arlington Heights, Illinois

DONE HQ LLC - Buffalo Grove, Illinois

CTLGroup Testing and Research Center - Mt Prospect, Illinois

Genesis 1 Technology Ltd - Wheeling, Illinois

Leopold Consulting, Ltd. - Buffalo Grove, Illinois

Proficio Consultancy, Inc. - Palatine, Illinois

Great Lakes Industrial - Buffalo Grove, Illinois

Field Theory Consulting Inc. - Vernon Hills, Illinois

Zonatherm Products, Inc - Buffalo Grove, Illinois