| Name | Title | Contact Details |
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QEI, Inc., founded in 1960 as Quindar Electronics, designs and manufactures Supervisory Control and Data Acquisition (SCADA) equipment and systems. The founders, experts in solid-state theory, initially produced one of the first transistorized families
CAD Professional Microphones is a Solon, OH-based company in the Manufacturing sector.
DuPage Precision Products is a Aurora, IL-based company in the Manufacturing sector.
AKRA BUILDERS is a Effingham, IL-based company in the Manufacturing sector.
The Tupman Thurlow Co. Inc. is a Simsbury, CT-based company in the Manufacturing sector.