| Biggest One Company Limited -The- | Private company limited by shares | Live |
| biggest pharmacy in Hong Kong Limited -The- | Private company limited by shares | Live |
| Biggest (Hongkong) Holding Co., Limited | Private company limited by shares | Live |
| BIGGEST LUCK LIMITED | | Live |
| BIGGEST PROJECT LIMITED | Private company limited by shares | Live |
| BIGGEST TALENT LIMITED | | Live |
| BIGGEST STAR TRADING LIMITED | Private company limited by shares | Live |
| BIGGEST WEALTH LIMITED | Private company limited by shares | Live |
| WORLD BIGGEST BIOLOGICAL MANUFACTURING COMPANY LIMITED | Private company limited by shares | Dissolved |