| 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 |