Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9798990 | Material management and control system | Zhiguang Guo, Sixiang Wu, Dafu Cheng | 2017-10-24 |
| 9523981 | Method and device for monitoring the number of sheets in drying oven, and management and control system of drying oven | Dafu Cheng | 2016-12-20 |