ABB Ltd. Azbil Corporation
Emerson Electric Co. Fuji Electric Co. Ltd. Hitachi Ltd. Honeywell International Inc. Mitsubishi Electric Corporation
Omron Corporation
Rockwell Automation Inc. Schneider Electric SE
Schweitzer Engineering Laboratories Inc. (SEL)
Siemens AG
Sprecher Automation GmbH
Toshiba Corporation
Valmet Oyj
Yokogawa Corporation