| CRYSTAL-I CAR BEAUTY & MAINTENANCE LIMITED | Private company limited by shares | Live |
| CRYSTALIME COMPANY LIMITED | Private company limited by shares | Dissolved |
| HK Crystal-Industrial Co., Limited | Private company limited by shares | Live |
| CRYSTALINE LIMITED | Private company limited by shares | Dissolved |
| CRYSTALINE COUNSELLING SERVICE CENTRE LIMITED | Private company limited by shares | Dissolved |
| CRYSTALINK LIMITED | Private company limited by shares | Live |
| CRYSTALINK INVESTMENT LIMITED | Private company limited by shares | Live |
| CRYSTALINK SOUVENIR LIMITED | Private company limited by shares | Dissolved |
| Crystal-IQ (HK) Co., Limited | Private company limited by shares | Live |
| CRYSTALIQUE LIMITED | Private company limited by shares | Dissolved |
| Crystalis IT Solutions Limited | | Live |
| CRYSTAL-IT LIMITED | Private company limited by shares | Live |
| CRYSTALITE COMPANY LIMITED | Private company limited by shares | Dissolved |
| CRYSTALITE ELECTRICAL ENGINEERING (DEVELOPMENT) LIMITED | Private company limited by shares | Live |
| CRYSTALITE ELECTRICAL ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| CRYSTALITE ELECTRICAL ENGINEERING (INVESTMENT) LIMITED | Private company limited by shares | Live |
| CRYSTALITE ELECTRICAL ENGINEERING (HK) LIMITED | Private company limited by shares | Live |
| MAYLAND CRYSTALITE MANUFACTURING COMPANY, LIMITED | Private company limited by shares | Dissolved |
| Crystalivee Limited | | Live |