Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9631850 | Thermal expansion valve with one-way control function | Changqing Liu, Ze Yuan, Jie Liu | 2017-04-25 |
| 9109822 | Expansion valve | Changqing Liu, Hongmin Song, Jie Liu | 2015-08-18 |