| Company Name | Type | Status |
|---|---|---|
| Hong Kong Koyu Cultural Development Limited | Live | |
| KOYU ELECTRONICS (HK) CO., LIMITED | Private company limited by shares | Live |
| KOYU TECHNOLOGY (HK) CO., LIMITED | Private company limited by shares | Live |
| KOYU INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| Koyudo Company Limited | Private company limited by shares | Live |
| KOYUELEC CO., LIMITED | Private company limited by shares | Live |
| KOYUKI ASIA LIMITED | Private company limited by shares | Live |
| KOYUKI CO., LIMITED | Private company limited by shares | Live |