| Company Name | Type | Status |
|---|---|---|
| F.S.I. Limited | Private company limited by shares | Live |
| F.S.I. (C.H.K.) ASSOCIATION LIMITED | Company limited by guarantee | Live |
| FSIA LIMITED | Private company limited by shares | Dissolved |
| FSILY LIMITED | Live | |
| Germany Fsisck Energy Group Co., Limited | Live | |
| GC F-SIX LIMITED | Private company limited by shares | Live |
| FSIX Limited | Private company limited by shares | Live |