Sunonwealth Electric Machine (2421.TW, TWSE) is a Taiwan, China company in the Liquid Cooling & Thermal segment of the AI compute value chain. As of October 04, 2026, its market cap is $1.5 billion ($1.5B), ranking #225 of 244 companies overall and #13 of 16 in the Liquid Cooling & Thermal segment (0.6% of the segment, 0.01% of the chain). Over the past year the stock gained 30.7% (52-week range 120.50 – 189.50 TWD).
| Company | Sunonwealth Electric Machine（建准电机） |
|---|---|
| Ticker | 2421.TW · TWSE |
| Segment | Liquid Cooling & Thermal |
| Headquarters | Taiwan, China |
| Market cap | $1.5B（$1.5 billion） |
| Close | 166.00 TWD (October 04, 2026) |
| Today | +1.22% |
| 30 days | +14.48% |
| 1 year | +30.71% |
| 52-wk high / low | 189.50 / 120.50 TWD |
| Share of segment | 0.6% (Liquid Cooling & Thermal: 16 companies) |
| Share of chain | 0.01% (244 companies combined) |
| Segment leader | Vertiv Holdings ($97.1B) |
| Revenue (TTM) | $638.9 million |
|---|---|
| Net income (TTM) | $85.9 million |
| Employees | 440 |
| P/E ratio (TTM) | 17.3 |
| P/B ratio | 4.51 |
| Gross margin | 31.8% |
| Net margin | 13.1% |
| Dividend yield | 3.31% |
| Basis | TTM (source: StockAnalysis, 2026-10-05 07:49) |
| # | Company | Market | Market cap |
|---|---|---|---|
| 1 | Vertiv Holdings VRT | US | $97.1B |
| 2 | AVC 3017.TW | TW | $42.4B |
| 3 | Jentech Precision Industrial 3653.TW | TW | $31.4B |
| 4 | nVent Electric NVT | US | $27.4B |
| 5 | Envicool 002837 | SZ | $10.3B |
| 6 | Shenling Environment 301018 | SZ | $4.9B |
| 7 | Jones Tech 300684 | SZ | $4.8B |
| 8 | Kaori Heat Treatment 8996.TW | TW | $4.4B |
| 9 | Auras Technology 3324.TW | TW | $4.4B |
| 13 | Sunonwealth Electric Machine 2421.TW | TW | $1.5B |
| 10 | FRD Science & Technology 300602 | SZ | $3.0B |