CK Marketing Solutions was established in January 2002. Its founder, Christian Otto Kostrau, held several different sales and marketing positions at a Fortune 200 company over the past 17 years.

Current satisfied customers include:
*API Consulting, Inc.
*Columbia College Chicago
*Purdue North Central University
*Unilever
*Diageo PLC
*NBC Channel 5 Chicago
*Kuczmarski & Associates
*Meals on Wheels Chicago
*PrimeCo
*N'Digo Foundation
*Body Endeavors
*The Maximum Profile Group
*Michigan City Animal Hospital
*Open Hand Chicago
*Sync Solutions, Inc.
*Gene's Village Towing
*Wheel-Inn Body & Motor Works, Inc.
*Centerpost Corporation
*Edgewater Dental Plaza
*Ristorante Dinotto
*Byrne Byrne & Company
*Vital Bridges
*State Rep. Harry Osterman, 17th Distr. IL.
*Dahm Plumbing
*Law Enforcement Training Officers of Wisconsin
*Alliance Banking Company
*Hamburg Distributing, Champaign, Illinois
*Argonne National Laboratory
*George Jewell Catering
*American Express Financial Services
*Columbia College Chicago
*The Spectacle Shop-Three Oaks, MI
*Mayor's Office, Michigan City, Indiana
*Ford Credit
*Ford Racing
*Campbell & Co. Detroit