| SPECTRO SYSTEM ASIA LIMITED | Private company limited by shares | Live |
| SPECTROL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SPECTRON LIMITED | Private company limited by shares | Dissolved |
| Spectron Integrated Co., Limited | | Live |
| SPECTRON ENTERPRISES LIMITED | Private company limited by shares | Live |
| SPECTRON SCIENTIFIC (HK) LIMITED | Private company limited by shares | Dissolved |
| Marex Spectron Limited | Private company limited by shares | Live Commenced dormancy on 16-Jun-2011 |
| SPECTRON TECHNOLOGY LIMITED | Private company limited by shares | Live |
| Spectron Telecom Limited | Private company limited by shares | Live |
| Spectronic (Hong Kong) Limited | Private company limited by shares | Live |
| SPECTRONIC DIGITAL MANUFACTURING LIMITED | Private company limited by shares | Dissolved |
| SPECTRONIC MANUFACTURERS AND RESEARCH LIMITED | Private company limited by shares | Dissolved |
| M. D. SPECTRONICS LIMITED | Private company limited by shares | Dissolved |
| SPECTRONIX LIMITED | Private company limited by shares | Dissolved |
| SPECTROVISION LIMITED | Private company limited by shares | Live |
| SPECTRUM COMPANY LIMITED | Private company limited by shares | Dissolved |
| SPECTRUM LIMITED | Private company limited by shares | Live |
| AP SPECTRUM LIMITED | Private company limited by shares | Live |
| RF Spectrum Limited | Private company limited by shares | Dissolved |
| B&K SPECTRUM LIMITED | Private company limited by shares | Dissolved |
| SPECTRUM TEX LIMITED | Private company limited by shares | Live |
| Spectrum 28 Limited | Private company limited by shares | Live |
| Spectrum Ink Company Limited | Private company limited by shares | Live |
| Spectrum SI Limited | Private company limited by shares | Live |
| Spectrum Hui Limited | Private company limited by shares | Live |
| Spectrum LED Limited | Private company limited by shares | Live |
| SPECTRUM XI AN LIMITED | Private company limited by shares | Live |
| Spectrum Fun Limited | Private company limited by shares | Live |
| BKP HK Spectrum Limited | Private company limited by shares | Live |
| Spectrum One Company Limited | | Live |
| SPECTRUM (ASIA) LIMITED | Private company limited by shares | Live |
| Spectrum Asia Limited | Private company limited by shares | Live |
| Spectrum Solutions Asia Limited | | Live |
| Spectrum Wine Auctions, Limited | Private company limited by shares | Live |
| Spectrum Capital Limited | Private company limited by shares | Live |
| SPECTRUM COMBINATION LIMITED | Private company limited by shares | Live |
| SPECTRUM COMMODITY LIMITED | Private company limited by shares | Live |
| SPECTRUM CONSORTIUM LIMITED | Private company limited by shares | Live |
| Spectrum Consultancy Limited | Private company limited by shares | Live |
| Spectrum Display Limited | | Live |
| DRAGON SPECTRUM COMPANY LIMITED | Private company limited by shares | Dissolved |
| SPECTRUM ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| Spectrum Eyewear Limited | Private company limited by shares | Live |
| SPECTRUM FINANCE LIMITED | | Live |
| HONG KONG CANAI SPECTRUM COMPANY LIMITED | Private company limited by shares | Live |
| Infrared Spectrum Company Limited | Private company limited by shares | Live |
| Spectrum Innovations Limited | | Live |
| SPECTRUM INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SPECTRUM INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| Spectrum Metaltrade Limited | Private company limited by shares | Live Commenced dormancy on 31-Dec-2013 |
| DIGITAL SPECTRUM PACIFIC LIMITED | Private company limited by shares | Dissolved |
| SPECTRUM PEAK LIMITED | Private company limited by shares | Dissolved |
| Spectrum Pharma Limited | Private company limited by shares | Live |
| POLY SPECTRUM LIMITED | Private company limited by shares | Dissolved |
| Spectrum Power Company Limited | Private company limited by shares | Live |
| SPECTRUM PROPERTIES LIMITED | Private company limited by shares | Dissolved |
| SPECTRUM PUBLISHING COMPANY LIMITED | Private company limited by shares | Dissolved |
| SPECTRUM REPRODUCTION COMPANY LIMITED | Private company limited by shares | Dissolved |
| SMART SPECTRUM LIMITED | Private company limited by shares | Live |
| Spectrum Software Limited | Private company limited by shares | Live |
| Solar Spectrum Limited | | Live |
| SPECTRUM SOLUTIONS LIMITED | Private company limited by shares | Live |
| SPECTRUM SOLUTIONS LIMITED | | Live |
| Spectrum Sports Limited | Private company limited by shares | Live |
| SPECTRUMIX INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| SPECTRUMIX INDUSTRIES LIMITED | Private company limited by shares | Live |
| SPECTRUMS EXPERT LIMITED | Private company limited by shares | Live |
| SPECULATIVE COMPANY LIMITED | Private company limited by shares | Live |
| New Agency for Speculative Architecture Limited | Private company limited by shares | Live |
| SPECULATOR INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SPECULUM TRADING LIMITED | Private company limited by shares | Dissolved |
| SpecVance Hong Kong Co., Limited | Private company limited by shares | Live |
| SPECWARFARE LIMITED | Private company limited by shares | Live |
| Shenzhen Specxiang Technology Co., Limited | Private company limited by shares | Live |
| Specxreef Limited | Private company limited by shares | Live |
| SPED & ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| SPED ASSOCIATES LIMITED | Private company limited by shares | Dissolved |
| SPEDA BERDORF LIMITED | Private company limited by shares | Live |
| SPEDEX MATERIALS HOLDING CO., LIMITED | Private company limited by shares | Live |
| S M SPEDITION LIMITED | Private company limited by shares | Dissolved |
| SET SPEDITION LIMITED | Private company limited by shares | Live |
| SET AIR CARGO SPEDITION LIMITED | Private company limited by shares | Live |
| MERRY FREIGHT SPEDITION LIMITED | Private company limited by shares | Dissolved |
| SAC INTERNATIONALE SPEDITION (HK) LIMITED | Private company limited by shares | Dissolved |
| SPEDIX LIMITED | Private company limited by shares | Live |
| SPEDLEY LIMITED | Private company limited by shares | Dissolved |
| SPEECH RED LIMITED | Private company limited by shares | Live |
| SPEECH ARCHITECTS LIMITED | Private company limited by shares | Live |
| CENTER FOR SPEECH DEBATE AND ADVOCACY LIMITED | Private company limited by shares | Live Commenced dormancy on 27-Apr-2016 |
| LCM Speech Centre Limited | Private company limited by shares | Dissolved |
| OAK SPEECH CENTRE LIMITED | Private company limited by shares | Live |
| GREAT STATION MUSIC AND SPEECH LIMITED | Private company limited by shares | Live |
| CENTRE FOR SPEECH & LANGUAGE LIMITED | Private company limited by shares | Live |
| SEQUENCE SPEECH AND LANGUAGE LIMITED | Private company limited by shares | Dissolved |
| CHINA SPEECH MAGAZINE LIMITED | Private company limited by shares | Dissolved |
| PLAYNLEARN SPEECH & ART ACADEMY LIMITED | Private company limited by shares | Live |
| ART SPEECH PUBLISHING LIMITED | Private company limited by shares | Dissolved |
| SPEECHEXPRESS LIMITED | Company limited by guarantee | Live |
| SpeechLab Limited | Private company limited by shares | Live |
| Imagine Speech-Language Pathology Limited | | Live |