About Us

SIM Products was started as Southern Illinois Machinery in 1976 by John R. Newsome in Shumway, Illinois.  SIM from the beginning has been a custom machine OEM.  John also holds several patents for binding and printing equipment.

Today SIM Products is a custom machine manufacturer, machine shop, electrical and controls contractor.

Who We Are

Jeff Petrowich

  • President
  • Head of Research and Development

Tom Rentfro

  • General Manager
  • Director of Mechanical Engineering

Cary Zehner

  • Director of Electrical Engineering
  • Director of Machine Assembly

Amy Lotz

  • Controller
  • Human Resources

Angie Newsome

  • Director of Purchasing

Vivian Kinkelaar

  • Director of Parts Department

Dave Frailey

  • Director of CNC Department

Myron Woomer

  • Production Manager

Terry Plowman

  • Service Manager

Terry Wohltman

  • Assembly Manager
  • Electrical Manager

Brian Burke

  • Regional Sales Manager