| # | Name | Location | Applications |
|---|---|---|---|
| 1. | EF-MATERIALS INDUSTRIES INC. | 🇹🇼 ZHONGLI CITY, Taiwan | 1 |
| 2. | EF-Materials Industries Inc. | 🇹🇼 Taoyuan County, Taiwan | 2 |
| 3. | EF-MATERIALS INDUSTRIES INC. | 🇹🇼 Zhongli, Taiwan | 1 |
| 4. | EFM Inc. | 🇰🇷 Seoul, South Korea | 2 |
| 5. | EFM SP. Z O.O. | 🇵🇱 Warsaw, Poland | 1 |