| HIN NGAI COMPANY LIMITED | Private company limited by shares | Live |
| NGAI KO COMPANY LIMITED | Private company limited by shares | Dissolved |
| NGAI WOO COMPANY LIMITED | Private company limited by shares | Dissolved |
| NGAI HIN COMPANY LIMITED | Private company limited by shares | Dissolved |
| HOW NGAI LIMITED | Private company limited by shares | Dissolved |
| NGAI MEE COMPANY LIMITED | Private company limited by shares | Dissolved |
| HOI NGAI COMPANY LIMITED | Private company limited by shares | Dissolved |
| NGAI U COMPANY LIMITED | Private company limited by shares | Dissolved |
| MAN NGAI COMPANY LIMITED | Private company limited by shares | Dissolved |
| NGAI LEE COMPANY LIMITED | Private company limited by shares | Dissolved |
| NGAI KUN COMPANY LIMITED | Private company limited by shares | Dissolved |
| PO NGAI COMPANY LIMITED | Private company limited by shares | Dissolved |
| NGAI WAH COMPANY LIMITED | Private company limited by shares | Live |
| SIN NGAI LIMITED | Private company limited by shares | Dissolved |
| DON NGAI LIMITED | Private company limited by shares | Dissolved |
| NGAI KAN LIMITED | Private company limited by shares | Live |
| NGAI YIP LIMITED | Private company limited by shares | Live |
| CHI NGAI LIMITED | Private company limited by shares | Dissolved |
| NGAI COMPANY LIMITED | Private company limited by shares | Dissolved |
| WAH NGAI COMPANY LIMITED | Private company limited by shares | Dissolved |
| LUK NGAI COMPANY LIMITED | Private company limited by shares | Live |
| TIN NGAI COMPANY LIMITED | Private company limited by shares | Dissolved |
| SUN NGAI OIL LIMITED | Private company limited by shares | Live |
| SUN NGAI LIMITED | Private company limited by shares | Live |
| KAI NGAI HIN LIMITED | Private company limited by shares | Dissolved |
| BO NGAI HK COMPANY LIMITED | Private company limited by shares | Live |
| WA NGAI CO. LIMITED | Private company limited by shares | Dissolved |
| KEI NGAI LIMITED | Private company limited by shares | Dissolved |
| KA NGAI WAH COMPANY LIMITED | Private company limited by shares | Dissolved |
| YAN NGAI COMPANY LIMITED | Private company limited by shares | Live |
| Sun Ngai Wah Limited | Private company limited by shares | Dissolved |
| NGAI LIMITED | Private company limited by shares | Live |
| LOK NGAI LIMITED | Private company limited by shares | Live |
| WAN NGAI LIMITED | Private company limited by shares | Live |
| Ngai Lam Company Limited | Private company limited by shares | Live |
| KAM YUI NGAI IMP & EXP LIMITED | Private company limited by shares | Live |
| Pak Ngai Limited | Private company limited by shares | Live |
| NGAI YIN LIMITED | | Live |
| LEE HOI NGAI LIMITED | | Live |
| BOBBY NGAI & CO. LIMITED | Private company limited by shares | Dissolved |
| KWANG NGAI JEWELLERY (CHINA) LIMITED | Private company limited by shares | Live |
| KWUN NGAI CREATIVE LIMITED | Private company limited by shares | Live |
| KONG NGAI ENGG. LIMITED | Private company limited by shares | Live |
| CHOW NGAI HING INVESTMENT COMPANY, LIMITED | Private company limited by shares | Dissolved |
| SCAN NGAI INSURANCE SERVICE LIMITED | Private company limited by shares | Live |
| NEW CHIU NGAI JEWELLERY LIMITED | Private company limited by shares | Live |
| CHUI NGAI JEWELLERY LIMITED | Private company limited by shares | Dissolved |
| KONG NGAI LIMITED | Private company limited by shares | Live |
| YUEN NGAI MOTORS SERVICE CENTRE LIMITED | Private company limited by shares | Dissolved |
| KONG NGAI SCAFFOLDING LIMITED | Private company limited by shares | Live |
| SCAN NGAI COMPANY LIMITED | Private company limited by shares | Live |
| MING NGAI SERVICE COMPANY LIMITED | Private company limited by shares | Live |
| CHIAO NGAI TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| KONG NGAI WATCH MANUFACTORY COMPANY LIMITED | Private company limited by shares | Dissolved |
| CHUI NGAI JEWELLERY WHOLESALERS LIMITED | Private company limited by shares | Dissolved |
| YUEN NGAI LIMITED | Private company limited by shares | Dissolved |
| NGAILUEN COMPANY LIMITED | Private company limited by shares | Live |
| TOM K. NGAI'S LIMITED | Private company limited by shares | Dissolved |
| NGAI'S TAT COMPANY LIMITED | Private company limited by shares | Dissolved |
| NGAI'S COMPANY LIMITED | | Live |