Entre otras:
| ABB | GAMMCO | PANASONIC |
| ALLEN BRADLEY | GENERAL ELECTRIC | PELCO |
| ALPHA | GLOBAL WEIGHT | POSITEC |
| ALTEK | GROSEBY | POWER CONTROL SYSTEMS |
| AMPAK | GWT | POWER ONE |
| ARTOS | HENDEHAIM | RELIANCE ELECTRIC |
| ASSOCIATED RESEARCH | HITACHI | ROSEMOUNT |
| ATLAS COPCO ELEKTRO | HONEYWELL | SANREX |
| AULIMAT | HUBBEL | SDCI |
| AVITROV | INDRAMAT | SERVPDINAMICS |
| BALDOR | INGERSOLL RAND | SEW |
| BERGERLAHR | JUKI | SHELLAB |
| BIDDLE | KB ELECTRONICS | SIEMENS |
| CEDA | KCI | SOLA |
| CELEC | KLUCKNER | SONATROL |
| CINCINNATI | KOMAX | SONY |
| COMPLIANCE ELECTRIC | LAMARC | SPELLMAN |
| CONTROL TECHNIQUES | LAMBDA | SUMITOMO |
| CURTIS | LENZE | TECHNIC |
| DELTADRIVE | MEGGER | TECHNITRON |
| DIGITAX | MICROFOX | TELEMECANIQUE |
| ELWOOD ELECTRONICS | MILLER | TENSIONREEL |
| EMCO | MITSUBISHI | TERMIFILEX |
| EUTOTHERM | MTUTOYO | THERMATHOOL |
| EXTECH | MIYACHI | TORREY |
| EZ | MODICON | TOSHIBA |
| FEDAL | MOELLER | TR ELECTRONICS |
| FANUC | MONSANTO | TRACO |
| FEMCO | NATIONAL CONTROL | TVO |
| FIFE | NEMATRON | TWIFLER |
| FISHER | OMEGA | WEIR |
| OMRON | WESTINGHOUSE | |
| PACIFIC SCIENTIFIC | YASKAWA | |
| YOKOGAWA |