| Company Name | Type | Status |
|---|---|---|
| HONG KONG SPECTRAL ENERGIES LIMITED | Private company limited by shares | Live |
| SPECTRAL RESEARCH SERVICES LIMITED | Private company limited by shares | Dissolved |
| Spectral IT Solutions Limited | Private company limited by shares | Live |
| SPECTRALINE LIMITED | Private company limited by shares | Live |
| Spectraline Technologies Company Limited | Private company limited by shares | Live |
| Spectralocus Industry Limited | Live |