| Company Name | Type | Status |
|---|---|---|
| KOSTAR BATTERY CO., LIMITED | Private company limited by shares | Dissolved |
| KO-STAR DEVELOPMENT CO., LIMITED | Private company limited by shares | Live |
| U.S.A KOSTAR GROUP LIMITED | Private company limited by shares | Dissolved |
| KOSTAR H.K. CO., LIMITED | Private company limited by shares | Dissolved |
| KOSTAR INDUSTRIAL CO., LIMITED | Private company limited by shares | Live |
| KOSTAR INVESTMENTS LIMITED | Private company limited by shares | Live |
| KoStarter Limited | Private company limited by shares | Live |