Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11092061 | Pulse exhaust pipe and diesel engine installed with pulse exhaust pipe | Zhijie Li, Xiaojun YIN, Chunying Wang | 2021-08-17 |
| 11041467 | Backflow preventer and engine EGR system | Wei Li, Zhijie Li, Jie Pan, Zuofeng Wang, Chuntao Liu +1 more | 2021-06-22 |
| 10961687 | Silt filtering device | Xiaojun Liu, Caixia Wang | 2021-03-30 |