| WELLDAY LIMITED | Private company limited by shares | Dissolved |
| WELLDAY ELECTRIC (HK) LIMITED | Private company limited by shares | Live |
| WELLDAY INDUSTRIAL LIMITED | Private company limited by shares | Live |
| WELLDAY INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| Wellday International Company Limited | Private company limited by shares | Live |
| WELLDAY INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| WELLDAY CAPITAL INVESTMENT LIMITED | Private company limited by shares | Live |
| WELLDAY LIGHTING CO., LIMITED | Private company limited by shares | Live |
| Smart Wellday Limited | Private company limited by shares | Live |
| WELLDAY TRADING COMPANY LIMITED | Private company limited by shares | Live Commenced dormancy on 08-Sep-2015 |