We are a Manufacturing Consulting firm specializing in business planning and strategic direction, staff analysis and development, effective value-stream management, continual supply chain improvement, total preventive maintenance, certification and auditing, waste reduction and strategies to increase sales and profit in Illinois and Wisconsin.

 Call 847-321- 5872 today to see how Mr. Marsh and BCS McHenry can help your business achieve your goals!

ISO9001 2015

 “Every executive has goals for their business. BCS McHenry works with business executives and managers to identify and remove the obstacles that keep them from being able to achieve those goals.
~ David Marsh, President BCS McHenry, Inc.

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What Our Clients Are Saying

We first met David Marsh when he was representing a new registrar for our ISO/TS 16949 certification. We had been forced to change registrars when the previous supplier was unable to schedule and fulfill our surveillance audit requirements, causing our certificate to be withdrawn; conditions at that time were very stressful. When David came on

Latest News

AIAGRGBDavid Marsh of BCS McHenry has received two new certifications to support manufacturers in and around McHenry County:
  • ISO 9001:2015 Lead Auditor (AIAG – Exemplar Global certified course)
  • IATF 16949:2016 Supplier Auditor (AIAG)


BCS McHenry provides professional consulting services to northern Illinois and southern Wisconsin manufacturers, as well as certification auditing services to companies all over the world. Identifying and implementing improvement plans that contribute to your growth and profit, we work with every aspect of your business from the board room to the manufacturing floor. We are excited to be able to provide consulting and auditing services specifically geared to help your company achieve ISO 9001, IATF 16949, or other standardized certification.

About BCS McHenry

David Marsh is a manufacturing consultant located in McHenry County Il, serving Northern Illinois and Southern Wisconsin specializing in Lean Manufacturing, Increase Sales Manufacturing, Cost Reduction Manufacturing, ISO 9001 and ISO/TS 16949 Consulting.

We service manufacturing companies in Nothern Illinois and Southern Wisconsin including Chicago, Arlington Heights, Aurora, Bolingbrook, Carol Stream, DeKalb, Des Plaines, Downers Grove, Elgin, Evanston, Gary Glenview, Gurnee, Joliet, La Grange, Kenosha, Michigan City, Mount Prospect, Naperville, Northbrook, Palatine, Schaumburg and Waukegan. In Southern Wisconsin we service manufacturers in Milwaukee, Waukesha, Racine, Mt. Pleasant, Janesville and Madison.

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