| STAR CASTLE INVESTMENTS LIMITED | Private company limited by shares | Live |
| STAR CASTLE PROPERTIES LIMITED | Private company limited by shares | Live |
| STATELY CASTLE LIMITED | Private company limited by shares | Live |
| CASTLE STEP LIMITED | Private company limited by shares | Live |
| Castle Step Finance Limited | Private company limited by shares | Live |
| CASTLE STEPS LIMITED | Private company limited by shares | Dissolved |
| STRONG CASTLE LIMITED | Private company limited by shares | Live |
| Strong Castle Industry Co., Limited | Private company limited by shares | Dissolved |
| STRONG CASTLE IMPETUS COMPANY LIMITED | Private company limited by shares | Dissolved |
| STRONG CASTLE INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| CASTLE STUDIO LIMITED | Private company limited by shares | Live |
| BRUSH CASTLE DE STUDIO LIMITED | Private company limited by shares | Live |
| CASTLE SUCCESS LIMITED | Private company limited by shares | Live |
| SUCCESS CASTLE LIMITED | Private company limited by shares | Live |
| SUCCESS CASTLE LIMITED | Private company limited by shares | Live |
| SUMMIT CASTLE LIMITED | | Live |
| SUNNY CASTLE LIMITED | Private company limited by shares | Dissolved |
| SUNNY CASTLE LIMITED | Private company limited by shares | Live |
| SUNNY CASTLE INVESTMENTS LIMITED | Private company limited by shares | Live |
| SUNSHINE CASTLE LIMITED | | Live |
| SUPER CASTLE LIMITED | Private company limited by shares | Dissolved |
| SURE CASTLE LIMITED | Private company limited by shares | Live |
| SURPLUS CASTLE LIMITED | Private company limited by shares | Live |
| SWEETIE AND CASTLE LIMITED | Private company limited by shares | Live |
| CASTLE SYSTEMS LIMITED | Private company limited by shares | Dissolved |
| TALENT CASTLE LIMITED | Private company limited by shares | Dissolved |
| CASTLE TALENT LIMITED | Private company limited by shares | Dissolved |
| TALENT CASTLE LIMITED | Private company limited by shares | Dissolved |
| CASTLE TALENT LIMITED | Private company limited by shares | Live |
| TALENT CASTLE LIMITED | Private company limited by shares | Dissolved |
| TALENT CASTLE LIMITED | Private company limited by shares | Live |
| TALENT CASTLE INVESTMENT LIMITED | Private company limited by shares | Live |
| TALENT CASTLE INVESTMENTS LIMITED | Private company limited by shares | Live |
| TEAM CASTLE LIMITED | Private company limited by shares | Live |
| TEAM CASTLE LIMITED | Private company limited by shares | Live |
| CASTLE TEAM LIMITED | Private company limited by shares | Live |
| NEW TECH CASTLE LIMITED | Private company limited by shares | Live |
| TECH CASTLE LIMITED | Private company limited by shares | Live |
| CASTLE PEAK TECH LIMITED | Private company limited by shares | Dissolved |
| Sky Castle Technologies Limited | Private company limited by shares | Live |
| CASTLE ADVANCED TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| Sky Castle Technology Limited | Private company limited by shares | Live |
| CASTLE OPTOELECTRONIC TECHNOLOGY COMPANY LIMITED | Private company limited by shares | Live |
| TIME CASTLE LIMITED | Private company limited by shares | Live |
| Castle Time Company Limited | Private company limited by shares | Live |
| Titan Castle Limited | Private company limited by shares | Dissolved |
| Toby Pet Castle Company Limited | Private company limited by shares | Live |
| Total Castle Limited | Private company limited by shares | Live |
| SKY CASTLE TOURS LIMITED | Private company limited by shares | Live |
| CASTLE TOYS LIMITED | Private company limited by shares | Dissolved |
| Toys Castle Limited | | Live |
| TRADE CASTLE LIMITED | Private company limited by shares | Live |
| WIN CASTLE TRADING LIMITED | Private company limited by shares | Dissolved |
| CASTLE TRADING LIMITED | Private company limited by shares | Dissolved |
| SUN CASTLE TRADING LIMITED | Private company limited by shares | Dissolved |
| TOP CASTLE TRADING LIMITED | Private company limited by shares | Dissolved |
| CASTLE TRADING LIMITED | Private company limited by shares | Dissolved |
| Castle Trading Limited | Private company limited by shares | Live |
| WIN CASTLE TRADING LIMITED | Private company limited by shares | Live |
| JOY CASTLE TRADING LIMITED | Private company limited by shares | Live |
| Castle C Trading Limited | | Live |
| Castle Trading (Asia) Limited | Private company limited by shares | Live |
| Champion Castle Trading Limited | Private company limited by shares | Live |
| DRAGON CASTLE TRADING LIMITED | Private company limited by shares | Dissolved |
| DRAGON CASTLE TRADING LIMITED | Private company limited by shares | Live |
| EMPEROR'S CASTLE TRADING LIMITED | Private company limited by shares | Dissolved |
| GALAXY CASTLE TRADING LIMITED | Private company limited by shares | Dissolved |
| GRAND CASTLE TRADING LIMITED | Private company limited by shares | Dissolved |
| RICH CASTLE TRADING INVESTMENT LIMITED | Private company limited by shares | Live |
| CASTLE STONE TRADING LIMITED | Private company limited by shares | Dissolved |
| WEALTH CASTLE TRADING LIMITED | | Live |
| TOP CASTLE TRAVEL COMPANY LIMITED | Private company limited by shares | Live |
| CASTLE TREASURE LIMITED | Private company limited by shares | Live |
| CASTLE TREASURE LIMITED | Private company limited by shares | Live |
| TREASURE CASTLE INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| TRILLION CASTLE LIMITED | Private company limited by shares | Live |
| SC Trillion Castle Limited | | Live |
| TRIPLE CASTLE COMPANY LIMITED | Private company limited by shares | Dissolved |
| TRIUMPH CASTLE LIMITED | Private company limited by shares | Live |
| Triumphant Castle Limited | Private company limited by shares | Live |
| TRUMP CASTLE LIMITED | Private company limited by shares | Live |
| ULTRA CASTLE COMPANY LIMITED | Private company limited by shares | Live |
| UNIQUE CASTLE LIMITED | Private company limited by shares | Live |
| UNITED CASTLE COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNITED CASTLE LIMITED | Private company limited by shares | Live |
| UNITED CASTLE LIMITED | Private company limited by shares | Live |
| VALUE CASTLE LIMITED | Private company limited by shares | Live |
| VAST CASTLE LIMITED | Private company limited by shares | Dissolved |
| VAST CASTLE LIMITED | Private company limited by shares | Live |
| CASTLE VAST LIMITED | Private company limited by shares | Live |
| CASTLE VENTURE COMPANY LIMITED | | Live |
| VICTORY CASTLE LIMITED | Private company limited by shares | Dissolved |
| VICTORY CASTLE LIMITED | Private company limited by shares | Live |
| VICTORY CASTLE SHIPPING LIMITED | Private company limited by shares | Live |
| VIDEO CASTLE LIMITED | Private company limited by shares | Dissolved |
| CASTLE VIEW LIMITED | Private company limited by shares | Live |
| Castle Vision Limited | Private company limited by shares | Live |
| CASTLE WAFFLES LIMITED | Private company limited by shares | Live |
| Castle Watch Company Limited | Private company limited by shares | Live |
| WEAL CASTLE LIMITED | Private company limited by shares | Dissolved |