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| RB Design, Inc. |   |
T.R.C. Circuits Inc. |   | |
Pro Tech |   | |
EE TEK RESOURCES INC., |   | |
JEI Jardon Engineering, Inc. |   | |
Circuit Graphics |   | |
Pronto Circuit Technologies |   | |
Circuit Design Solutions Inc. |   | |
Coretec, Inc. |   | |
CEM ltd 4DI-Flowtronics Division |   | |
American Standard Circuits, Inc. |   | |
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