Taiwan Union Technology (6274.TW, TWSE) is a Taiwan, China company in the PCB & CCL segment of the AI compute value chain. As of October 04, 2026, its market cap is $14.7 billion ($14.7B), ranking #119 of 244 companies overall and #14 of 27 in the PCB & CCL segment (2.5% of the segment, 0.06% of the chain). Over the past year the stock gained 450.1% (52-week range 309.50 – 1,900.00 TWD).
| Company | Taiwan Union Technology（台燿科技） |
|---|---|
| Ticker | 6274.TW · TWSE |
| Segment | PCB & CCL |
| Headquarters | Taiwan, China |
| Market cap | $14.7B（$14.7 billion） |
| Close | 1,620.00 TWD (October 04, 2026) |
| Today | +5.54% |
| 30 days | +8.00% |
| 1 year | +450.08% |
| 52-wk high / low | 1,900.00 / 309.50 TWD |
| Share of segment | 2.5% (PCB & CCL: 27 companies) |
| Share of chain | 0.06% (244 companies combined) |
| Segment leader | Unimicron Technology ($67.2B) |
| # | Company | Market | Market cap |
|---|---|---|---|
| 1 | Unimicron Technology 3037.TW | TW | $67.2B |
| 2 | Elite Material 2383.TW | TW | $58.3B |
| 3 | Shengyi Technology 600183 | SH | $47.0B |
| 4 | Suzhou Dongshan Precision 002384 | SZ | $45.7B |
| 5 | Ibiden 4062.T | JP | $43.5B |
| 6 | Shennan Circuits 002916 | SZ | $37.8B |
| 7 | WUS Printed Circuit 002463 | SZ | $33.2B |
| 8 | Victory Giant Technology 300476 | SZ | $30.8B |
| 9 | Nan Ya PCB 8046.TW | TW | $29.6B |
| 14 | Taiwan Union Technology 6274.TW | TW | $14.7B |
| 10 | Zhen Ding Technology 002938 | SZ | $27.5B |