| HuaTong Photonics Co., Limited | Private company limited by shares | Live |
| II-VI PHOTONICS LIMITED | Private company limited by shares | Live |
| FEDERATION OF ASIA PACIFIC PHOTONICS INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| PHOTONICS INSTRUMENTS LIMITED | Private company limited by shares | Dissolved |
| LEO PHOTONICS INTERNATIONAL CO., LIMITED | Private company limited by shares | Live |
| Seren Photonics International Limited | Private company limited by shares | Live |
| Photonics Technology International Group Limited | | Live |
| JOUDYSH PHOTONICS (HK) CO., LIMITED | Private company limited by shares | Live |
| LAMBDA PHOTONICS LIMITED | Private company limited by shares | Live |
| Lighteek Photonics (HongKong) Co., Limited | Private company limited by shares | Live |
| PHOTONICS MANUFACTURING LIMITED | Private company limited by shares | Dissolved |
| TRINITY PHOTONICS MANUFACTURING COMPANY LIMITED | Private company limited by shares | Live |
| OPCROWN PHOTONICS COMPANY LIMITED | Private company limited by shares | Live |
| Oscar Photonics (Hong Kong) Limited | Private company limited by shares | Live |
| OVEROCEAN PHOTONICS TECHNOLOGY LIMITED | Private company limited by shares | Live |
| PARETO PHOTONICS LIMITED | Private company limited by shares | Dissolved |
| PODIUM PHOTONICS LIMITED | Private company limited by shares | Live |
| Polycom Photonics Co., Limited | Private company limited by shares | Live |
| RADIANT PHOTONICS LIMITED | Private company limited by shares | Dissolved |
| RAINBOW PHOTONICS CO., LIMITED | Private company limited by shares | Dissolved |
| Raysung Photonics Limited | Private company limited by shares | Live |
| RELIABLE PHOTONICS (HONG KONG) COMPANY LIMITED | Private company limited by shares | Live |
| Sapphire Photonics Company Limited | Private company limited by shares | Live |
| PHOTONICS SEMICONDUCTOR CO., LIMITED | Private company limited by shares | Live |
| SICUBE PHOTONICS CO., LIMITED | Private company limited by shares | Live |
| Soing Photonics Limited | | Live |
| FOR Photonics Sourcing Limited | Private company limited by shares | Dissolved |
| Photonics Sourcing Limited | Private company limited by shares | Live |
| PHOTONICS SOURCING HK LIMITED | Private company limited by shares | Live |
| Summit Photonics Limited | Private company limited by shares | Live |
| Photonics Tech Limited | Private company limited by shares | Live |
| ASTRI PHOTONICS TECHNOLOGIES LIMITED | Private company limited by shares | Dissolved |
| PHOTONICS TECHNOLOGY LIMITED | Private company limited by shares | Live |
| DK PHOTONICS TECHNOLOGY LIMITED | Private company limited by shares | Live |
| LUY Photonics Technology Limited | Private company limited by shares | Live |
| HK Dongwei Photonics Technology Co., Limited | Private company limited by shares | Live |
| Eternal Photonics Technology Limited | Private company limited by shares | Live |
| FASO PHOTONICS TECHNOLOGY LIMITED | Private company limited by shares | Live |
| ZHONLAN PHOTONICS TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| TEJING PHOTONICS CO., LIMITED | Private company limited by shares | Live |
| TEOSCO PHOTONICS CO., LIMITED | Private company limited by shares | Live |
| TOPVIEW PHOTONICS LIMITED | Private company limited by shares | Live |
| TRANSTECH PHOTONICS LIMITED | Private company limited by shares | Dissolved |
| HK Ultraritter Photonics Co., Limited | | Live |
| UNIVERSAL PHOTONICS HONG KONG LIMITED | Private company limited by shares | Live |
| Univision Photonics Technology Limited | Private company limited by shares | Live |
| WORLD LINK PHOTONICS LIMITED | Private company limited by shares | Live |
| Wyrowski Photonics Limited | Private company limited by shares | Live |
| XESTON PHOTONICS COMPANY LIMITED | Private company limited by shares | Live |
| Yongshun Photonics Technology (HK) Co., Limited | Private company limited by shares | Dissolved |
| PHOTONIUM LIMITED | Private company limited by shares | Live |
| Photonlite Limited | | Live |
| PhotonMed International Limited | Private company limited by shares | Live |
| PHOTONOVA HK LIMITED | Private company limited by shares | Live |
| Photons Co., Limited | | Live |
| Data Photons Limited | | Live |
| PHOTONS LIGHTING AND ELECTRIC LIMITED | Private company limited by shares | Live |
| PHOTONSOFT COMPANY LIMITED | Private company limited by shares | Live |
| PHOTONSTREAM LIMITED | Private company limited by shares | Live |
| PhotonTech Limited | Private company limited by shares | Live |
| PHOTONTECK COMPANY LIMITED | Private company limited by shares | Live |
| PhotonTek Optronics Inc. Limited | | Live |
| PHOTONTELLIGENCE LIMITED | | Live |
| PhotonVation Limited | Private company limited by shares | Live |