1. Mitsubishi Electric (China) Co. Ltd.
2. Yokogawa Electric (China) Co. Ltd.
3. Rockwell Automation (China) Company Limited
4. ABB (China) Limited
5. Advantech (China) Co. Ltd.
6. Schneider Electric
7. Emerson Electric Co.
8. Honeywell (China) Co. Ltd.
9. Siemens AG
10. GE (China) Co. Ltd.