Issued Patents 2020
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10836115 | Mat roller | Wang Hai, Wang You Cai | 2020-11-17 |
| 10667046 | Modular multichannel audio connection system | Wang Hai, Gu Wendong, Zhou Liang | 2020-05-26 |
| 10582296 | Foldable speaker baffle system | Wang Hai, Gu Wendong, Zhou Liang | 2020-03-03 |