| F.E.C. INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| China Fecal Sample Repository Limited | | Live |
| FECAT LIMITED | Private company limited by shares | Live |
| HONG KONG CHINA FECING ASSOCIATION LIMITED | | Live |
| CHINA BOOK FECIT ARTIST ISOC LIMITED | Private company limited by shares | Dissolved |
| FECKENHAM LIMITED | Private company limited by shares | Live |
| Feco Company Limited | Private company limited by shares | Live |
| FECOR RESOURCE (HK) LIMITED | Private company limited by shares | Dissolved |
| FECORP INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| FECOS COMPANY LIMITED | Private company limited by shares | Live |
| FECS Limited | Private company limited by shares | Live |
| FECUND COMPANY LIMITED | Private company limited by shares | Dissolved |
| FECUND HOLDING CO., LIMITED | Private company limited by shares | Live |
| FECUND INVESTMENTS LIMITED | Private company limited by shares | Live |
| FECUND TRANSPORTATION LIMITED | Private company limited by shares | Live |