Top Inventors at Tong Oil Tools Co. All Time
Showing 1–7 of 7 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | Guoan Zhang | 6 |
| 1 | Jianlong Cheng | 6 |
| 3 | Xianhong Sun | 4 |
| #4 | Jiafu Zhang | 1 |
| #4 | Jun Liu | 1 |
| #4 | Yuanhong Li | 1 |
| #4 | Zhihua Zhou | 1 |
Showing 1–7 of 7 inventors
| Rank | Name | Patents |
|---|---|---|
| 1 | Guoan Zhang | 6 |
| 1 | Jianlong Cheng | 6 |
| 3 | Xianhong Sun | 4 |
| #4 | Jiafu Zhang | 1 |
| #4 | Jun Liu | 1 |
| #4 | Yuanhong Li | 1 |
| #4 | Zhihua Zhou | 1 |