| PRINCE SELF-SERVICE LAUNDRY & DRYCLEANING COMPANY, LIMITED | Private company limited by shares | Dissolved |
| HONG KONG SELF-SERVICE LAUNDRY OWNERS ASSOCIATION LIMITED | Company limited by guarantee | Dissolved |
| DAT Self-Service System (Hong Kong) Limited | Private company limited by shares | Live |
| HONGKONG HEXU SELF-SERVICE LAUNDRY CO., LIMITED | Private company limited by shares | Live |
| DAT SELF-SERVICE SYSTEM LIMITED | Private company limited by shares | Live |
| CYBER SELF-SERVICE SYSTEM LIMITED | Private company limited by shares | Dissolved |
| Z WASH SELF-SERVICE LAUNDRY (HUNG HOM) LIMITED | Private company limited by shares | Live |
| Z WASH SELF-SERVICE LAUNDRY LIMITED | Private company limited by shares | Live |