| ADVANCE X-RAY & MEDICAL DIAGNOSTIC CENTRE LIMITED | Private company limited by shares | Live |
| HK Cargo X-Ray Limited | Private company limited by shares | Live |
| X-RAY TECHNOLOGY CO., LIMITED | Private company limited by shares | Live |
| X-RAY DESIGN LIMITED | Private company limited by shares | Dissolved |
| EARNEST MEDICAL X-RAY LABORATORY LIMITED | Private company limited by shares | Dissolved |
| EURASIA X-RAY AND MEDICAL LABORATORY LIMITED | Private company limited by shares | Dissolved |
| NEW EURASIA X-RAY & MEDICAL LABORATORY LIMITED | Private company limited by shares | Live |
| GOLDEN MEDICAL LABORATORY & X-RAY SERVICES LIMITED | Private company limited by shares | Dissolved |
| GOLDEN PLAZA X-RAY & LABORATORY LIMITED | Private company limited by shares | Dissolved |
| X-RAY TECHNOLOGY (HK) CO., LIMITED | Private company limited by shares | Dissolved |
| HongKong X-ray Photoelectric Co., Limited | Private company limited by shares | Live |
| XRAY INDUSTRY CO., LIMITED | Private company limited by shares | Live |
| Keen Well Laboratory and X-Ray Services Limited | | Live |
| FRANCE X-RAY & LABORATORY CENTRE CO. LIMITED | Private company limited by shares | Live |
| CHUNG WAH X-RAY AND LABORATORY LIMITED | Private company limited by shares | Dissolved |
| CHUNG WAH X-RAY & LABORATORY LIMITED | Private company limited by shares | Dissolved |
| FAR EAST X-RAY LABORATORY LIMITED | Private company limited by shares | Dissolved |
| FAR EAST X-RAY AND LABORATORY CENTRE LIMITED | Private company limited by shares | Dissolved |
| EMPIRE X-RAY & LABORATORY LIMITED | Private company limited by shares | Dissolved |
| GIANT MEDICAL LABORATORY & X-RAY SERVICES LIMITED -THE- | Private company limited by shares | Live |
| NEW HEALTH X-RAY & LABORATORY CENTRE LIMITED | Private company limited by shares | Live |
| HEEP WO X-RAY & LABORATORY LIMITED -THE- | Private company limited by shares | Dissolved |
| HONEST X-RAY & LABORATORY LIMITED | Private company limited by shares | Dissolved |
| Hong Ning X-Ray and Laboratory (Amoy) Company Limited | Private company limited by shares | Dissolved |
| HONG KONG X-RAY & MEDICAL LABORATORY LIMITED | Private company limited by shares | Dissolved |
| HONG KONG MEDLINK X-RAY & LABORATORY LIMITED | Private company limited by shares | Live |
| HONG NING X-RAY AND LABORATORY COMPANY LIMITED | Private company limited by shares | Live |
| ABERDEEN X-RAY & MEDICAL LABORATORY LIMITED | Private company limited by shares | Dissolved |
| MAN KOK X-RAY AND MEDICAL LABORATORY CENTRE LIMITED | Private company limited by shares | Dissolved |
| TST X-RAY MEDICAL LABORATORY CENTRE LIMITED | Private company limited by shares | Dissolved |
| NEW CENTURY X-RAY & MEDICAL LABORATORY COMPANY LIMITED | Private company limited by shares | Dissolved |
| CHUNG TAI X-RAY & MEDICAL LABORATORY LIMITED - THE - | Private company limited by shares | Live |
| DYNAMIC X-RAY & MEDICAL LABORATORY LIMITED | Private company limited by shares | Live |
| DYNAMIC (MK) X-RAY AND MEDICAL LABORATORY LIMITED | Private company limited by shares | Live |
| ELITE MEDICAL AND X-RAY LABORATORY, LIMITED - THE - | Private company limited by shares | Live |
| HEALTH X-RAY & MEDICAL LABORATORY LIMITED | Private company limited by shares | Dissolved |
| HONGKONG-KOWLOON MEDICAL LABORATORY & X-RAY SERVICE LIMITED -THE- | Private company limited by shares | Dissolved |
| HONG'S MEDICAL LABORATORY AND X-RAY SERVICES LIMITED | Private company limited by shares | Dissolved |
| MODERN X-RAY & MEDICAL LABORATORY LIMITED | Private company limited by shares | Live |
| MONGKOK X-RAY & MEDICAL LABORATORY LIMITED | Private company limited by shares | Live |
| NATHAN X-RAY & MEDICAL LABORATORY LIMITED | Private company limited by shares | Dissolved |
| NEOSINO X-RAY MEDICAL LABORATORY LIMITED | Private company limited by shares | Dissolved |
| GODWIN MEDICAL LABORATORY & X-RAY SERVICES LIMITED | Private company limited by shares | Dissolved |
| SHATIN X-RAY AND MEDICAL LABORATORY LIMITED | Private company limited by shares | Dissolved |
| TODAY X-RAY & MEDICAL LABORATORY COMPANY LIMITED | Private company limited by shares | Live |
| TSUEN WAN X-RAY & MEDICAL LABORATORY CENTRE LIMITED | Private company limited by shares | Dissolved |
| TUNG WAH X-RAY & MEDICAL LABORATORY LIMITED | Private company limited by shares | Live |
| VICTORIA X-RAY & MEDICAL LABORATORY LIMITED | Private company limited by shares | Dissolved |
| LEK YUEN X-RAY MEDICAL LABORATORY LIMITED | Private company limited by shares | Dissolved |
| MEDICHECK X-RAY & LABORATORY LIMITED | Private company limited by shares | Live |
| MEDICLAB X-RAY & LABORATORY SERVICE LIMITED | Private company limited by shares | Dissolved |
| Modern X-Ray & Laboratory Limited | | Live |
| NORTH POINT X-RAY & LABORATORY LIMITED | Private company limited by shares | Dissolved |
| NORTH POINT (TAI ON) X-RAY & LABORATORY LIMITED | Private company limited by shares | Dissolved |
| SHAUKIWAN X-RAY & MEDICAL LABORATORY LIMITED | Private company limited by shares | Dissolved |
| Shaukiwan Laboratory and X-Ray Services Limited | | Live |
| Shaukiwan Medical Laboratory and X-Ray Services Limited | Private company limited by shares | Live |
| STYLE X-RAY & LABORATORY LIMITED | Private company limited by shares | Live |
| WATEX X-RAY & LABORATORY LIMITED | Private company limited by shares | Live |
| TUNG YING X-RAY LABORATORY LIMITED | Private company limited by shares | Dissolved |
| AUTO-ELECTRON MEDICAL & X-RAY LABORATORIES LIMITED | Private company limited by shares | Dissolved |
| LEIGHTON X-RAY MEDICAL DIAGNOSTIC CENTRE LIMITED | Private company limited by shares | Dissolved |
| PARKLANE X-RAY MEDICAL DIAGNOSTIC CENTRE LIMITED | Private company limited by shares | Live |
| DIAGNOSTIX MEDICAL CENTRE (X-RAY) LIMITED | Private company limited by shares | Live |
| GERMANY MEDICAL X-RAY CENTRE LIMITED | Private company limited by shares | Dissolved |
| YEE TAK X-RAY AND MEDICAL LABORATORIES CENTER LIMITED | Private company limited by shares | Live |
| HEALTH BOOM X-RAY & MEDICAL LABORATORIES LIMITED | Private company limited by shares | Live |
| NEW TSUEN WAN X-RAY & MEDICAL LAB LIMITED | Private company limited by shares | Dissolved |
| MEDLAB X-RAY & MEDICAL DIAGNOSTIC CENTRE LIMITED | Private company limited by shares | Live |
| MEDPRO X-RAY & MEDICAL DIAGNOSTIC CENTRE LIMITED | Private company limited by shares | Live |
| X-RAY SCAN SECURITY ELECTRONICS HK CO., LIMITED | Private company limited by shares | Live |
| MODERN X-RAY MEDICAL SERVICES LIMITED | Private company limited by shares | Dissolved |
| UNITED X-RAY SERVICES LIMITED | Private company limited by shares | Live |
| X-RAY TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| WELLSUCCESS X-RAY & DIAGNOSTIC CENTRE LIMITED | Private company limited by shares | Dissolved |
| NEW WORLD X-RAY & MEDICAL LABORATORY LIMITED -THE- | Private company limited by shares | Dissolved |