| OPTRON H.K LIMITED | Private company limited by shares | Live |
| OPTRON TECHNOLOGY HK LIMITED | Private company limited by shares | Live |
| FOSINCE OPTRONEC (HK) LIMITED | Private company limited by shares | Dissolved |
| ADVANCED OPTRONIC DEVICES (ASIA) CO. LIMITED | Private company limited by shares | Live |
| JC OPTRONICS LIMITED | Private company limited by shares | Dissolved |
| M.K Optronics HK Limited | Private company limited by shares | Dissolved |
| T&Q OPTRONICS LIMITED | Private company limited by shares | Live Commenced dormancy on 18-Mar-2016 |
| INT Optronics Limited | Private company limited by shares | Live |
| OPTRONICS LIMITED | Private company limited by shares | Live |
| Advanced Optronics Limited | | Live |
| GLORY OPTRONICS LIMITED | Private company limited by shares | Live |
| PACIFIC GOAL OPTRONICS LIMITED | Private company limited by shares | Live |
| TAI LONG OPTRONICS LIMITED | Private company limited by shares | Live |
| MEGA POWER OPTRONICS LIMITED | Private company limited by shares | Dissolved |
| PROTECH OPTRONICS COMPANY LIMITED | Private company limited by shares | Dissolved |
| SKYTEK OPTRONICS LIMITED | Private company limited by shares | Live |
| SOUTH HAOYU OPTRONICS LIMITED | Private company limited by shares | Live |
| JD OPTRONIX LIMITED | Private company limited by shares | Live |