| Company Name | Type | Status |
|---|---|---|
| COSINE LIMITED | Private company limited by shares | Live |
| Cosine CPA Limited | Private company limited by shares | Live |
| Cosine Sports & Entertainment Co., Limited | Live | |
| COSINE ELECTRONIC PARTS LIMITED | Private company limited by shares | Dissolved |
| COSINE ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| HONG KONG SINE & COSINE CONSULTING LIMITED | Private company limited by shares | Live |
| COSINE PUBLICATION COMPANY LIMITED | Private company limited by shares | Dissolved |