| Name | Quantity of shares | Shareholding Percentage (note) |
| Feng Hsin Steel Co., Ltd. | 26,611,587 | 23.92% |
| Tung Ho Steel Enterprise Corp. | 24,829,009 | 22.31% |
| Hai Kwang Enterprise Corporation | 9,691,512 | 8.71% |
| Shyeh Sheng Fuat Steel & Iron Works Co., Ltd. | 9,677,573 | 8.70% |
| Chien Shun Steel Co., Ltd. | 6,116,469 | 5.50% |
| Lung Ching Steel Enterprise Co., Ltd. | 4,037,637 | 3.63% |
| United Steel Corporation | 3,767,671 | 3.39% |
| Cheng Chuang Investment Co., Ltd. | 3,610,000 | 3.24% |
| Wei Chih Steel Industrial Co., Ltd. | 3,351,449 | 3.01% |
Note：：As of April 1, 2023, TSU has 111,270,887 shares outstanding.
