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| Winland Electronics, Inc. |   |
Greenspan Technology |   | |
Sutron Corporation |   | |
Campbell Scientific, Inc. |   | |
Unidata America |   | |
Automata, Inc. |   | |
Delta T Devices Ltd |   | |
Wescor, Inc |   | |
FTS Forest Technology Systems, Inc. |   | |
Aanderaa Instruments |   | |
|