| Fountainmed Limited | Private company limited by shares | Live |
| MAN WAH FOUNTAINPENS AND LIGHTERS COMPANY LIMITED | Private company limited by shares | Dissolved |
| CLEARSPRING FOUNTAINS LIMITED | Private company limited by shares | Live |
| FOUNTAINSIDE LIMITED | Private company limited by shares | Live |
| FOUNTAINVEST HK LIMITED | Private company limited by shares | Live |
| FountainVest Capital Limited | | Live |
| FOUNTOM GROUP LIMITED | Private company limited by shares | Live |
| Founton Technology Co., Limited | | Live |
| FOUNTON CORPORATION (HK) LIMITED | Private company limited by shares | Dissolved |
| Fountpoint Limited | Private company limited by shares | Live |
| FOUNTS ENTERPRISES LIMITED | Private company limited by shares | Dissolved |