| KOSHIN CHINA LIMITED | Private company limited by shares | Dissolved |
| KOSHIN TRADING CO., LIMITED | Private company limited by shares | Live |
| KOSHIN CORPORATION HONG KONG LIMITED | Private company limited by shares | Live |
| KOSHIN ELECTRONICS LIMITED | Private company limited by shares | Live |
| KOSHIN (H.K.) LIMITED | Private company limited by shares | Live |
| TOKYO KOSHIN (H.K.) LIMITED | Private company limited by shares | Live |
| KOSHIN ELECTRONICS HOLDINGS LIMITED | Private company limited by shares | Live |
| KOSHIN PLASTIC HONG KONG LIMITED | Private company limited by shares | Live |
| KOSHIN INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| KOSHIN INTERNATIONAL LIMITED | Private company limited by shares | Live |
| KOSHIN KOGYO (HK) CO. LIMITED | Private company limited by shares | Live |
| KOSHIN SHIPPING COMPANY LIMITED | Private company limited by shares | Dissolved |
| KOSHINE Technology Co., Limited | Private company limited by shares | Live |
| KOSHINE TECHNOLOGY HONGKONG LIMITED | Private company limited by shares | Live |
| KOSHINE INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| Koshine Pharmaceuticals Limited | Private company limited by shares | Live |
| KOSHING LIMITED | Private company limited by shares | Live |
| KOSHING ESTATE (CHINA) LIMITED | Private company limited by shares | Dissolved |
| KOSHING INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| KOSHING TRADING LIMITED | Private company limited by shares | Live |