| SINOTECH OPTICS COMPANY LIMITED | Private company limited by shares | Live |
| SIRIUS OPTICS LIMITED | Private company limited by shares | Live |
| SMART OPTICS LIMITED | Private company limited by shares | Live |
| Sourcelight Optics Limited | Private company limited by shares | Live |
| Success Optics Limited | Private company limited by shares | Live |
| SUNSCOPE OPTICS LIMITED | Private company limited by shares | Live |
| SUPER OPTICS INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| OPTICS SYSTEM LIMITED | Private company limited by shares | Dissolved |
| TAOSHI OPTICS (HK) LIMITED | Private company limited by shares | Live |
| Longsheng Optics Technologies International Limited | Private company limited by shares | Live |
| CHAMPION FINE OPTICS TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Five Orientations Optics Technology Limited | Private company limited by shares | Live |
| OKLENS OPTICS TECHNOLOGY (HONGKONG) LIMITED | Private company limited by shares | Live |
| PUARA Optics Technology Limited | Private company limited by shares | Live |
| Reach Optics Technology Co., Limited | Private company limited by shares | Live |
| TASSAN OPTICS TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| Thin Film Optics Limited | Private company limited by shares | Dissolved |
| TAI TUNG OPTICS LIMITED | Private company limited by shares | Dissolved |
| TWINKLE OPTICS LIMITED | Private company limited by shares | Live |
| HK VIEWWAY OPTICS LIMITED | Private company limited by shares | Live |
| Walsun Optics Limited | Private company limited by shares | Live |
| Tow Well Optics Limited | | Live |
| Well Optics Co., Limited | Private company limited by shares | Live |
| WENZHOU FC OPTICS LIMITED | Private company limited by shares | Live |
| WONDER OPTICS LIMITED | | Live |
| Yeshi Optics Limited | Private company limited by shares | Live |
| XIAMEN YIHONG OPTICS LIMITED | Private company limited by shares | Live |
| YIRAN OPTICS CO., LIMITED | Private company limited by shares | Live |
| YUCHEN OPTICS CO., LIMITED | Private company limited by shares | Live |
| ZONE OPTICS LIMITED | Private company limited by shares | Live |
| OPTIC-SCIENCE COMPANY LIMITED | Private company limited by shares | Dissolved |
| Opticshock Asia Limited | Private company limited by shares | Live |
| OPTICS-LINK COMPANY LIMITED | Private company limited by shares | Dissolved |
| OPTICSMIND LIMITED | Private company limited by shares | Live |