| R.N. Laboratories (Hong Kong) Company Limited | Private company limited by shares | Live |
| R.N. Trading Limited | Private company limited by shares | Live |
| RNA-ANC LIMITED | | Live |
| RNCBIO HONG KONG COMPANY LIMITED | Private company limited by shares | Live |
| RNCC Limited | Private company limited by shares | Live |
| RNCH Limited | Private company limited by shares | Live |
| RNCHEM LIMITED | Private company limited by shares | Dissolved |
| Rnchuang digital technology service (Mega) Co., Limited | | Live |
| RNCY LIMITED | Private company limited by shares | Live |
| R.N.J. BURGESS AND SONS LIMITED | Private company limited by shares | Dissolved |
| R.N.K. COMPANY LIMITED | Private company limited by shares | Dissolved |
| RNKEN LIMITED | Private company limited by shares | Live |
| RNLIFE ENGINEERING COMPANY LIMITED | Private company limited by shares | Live |
| RNLS PRODUCTIONS LIMITED | Private company limited by shares | Live |
| RNLS PUBLISHING LIMITED | Private company limited by shares | Live |
| R.N.M LIMITED | Private company limited by shares | Live |
| rnodel Limited | Private company limited by shares | Live |
| RNPN LIMITED | | Live |
| RNTC LIMITED | Private company limited by shares | Live |
| RNTEKIMM Limited | Private company limited by shares | Dissolved |
| RNTOU INTERNATIONAL LIMITED | | Live |
| RNZB HK Limited | Private company limited by shares | Live |