| Squire Cogswell |
| D-M-E Company |
| Atlantic Scientific Corporation |
| HH Smith |
| Trans-Tek |
| Gruppo Industriale Ercole Marelli |
| Hirschmann |
| Hein-Werner Automotive |
| Gammaflux |
| Schmersal |
| Midwest |
| Alpha Wire |
| R-K Electronics |
| Plasthing |
| Doerr |
| Wandfluh AG |
| Selecta |
| Inc. (WEST), World Energy Systems Technology |
| Holobar |
| Vibco Vibrator |
| Schafer Brush Manufacturing |
| Anderson |
| ACE |
| Amphenol Industrial Operations |
| Amphenol Aerospace |
| Syracuse Electronics |
| Sauer Sundstrand |
| Eberle |
| Newman |
| McQuay International |
| Hankison International |
| Electro Adda |
| Trane |
| Lagrange Products |
| Alren |
| Dynapro |
| American Blower Corporation |
| Shibaura |
| Electrostat |
| Photoswitch |
