| Company Name | Type | Status |
|---|---|---|
| SHINKA-ADVANCE LIMITED | Private company limited by shares | Live |
| SHINKAI COMPANY LIMITED | Private company limited by shares | Live |
| SHINKAICHI TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| Shinkaizen Limited | Private company limited by shares | Live |
| SHINKAWA CATERING COMPANY LIMITED | Private company limited by shares | Dissolved |