| WAH CHACK ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| WAH CHACK ENGINEERING COMPANY LIMITED | Private company limited by shares | Dissolved |
| WAH CHACK ENGINEERING & TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| CHACK ON INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| LAI CHACK MIDDLE SCHOOL ALUMNI LIMITED | Company limited by guarantee | Live |
| LAI CHACK MIDDLE SCHOOL LIMITED | Company limited by guarantee | Live |
| SUN CHACK SCULPTURE CO. LIMITED | Private company limited by shares | Dissolved |