| RULER LIMITED | Private company limited by shares | Dissolved |
| Ruler Limited | Private company limited by shares | Live |
| ABLE RULER LIMITED | Private company limited by shares | Dissolved |
| RULER GROUP (FRANCE) BRAND OPERATION LIMITED | Private company limited by shares | Live |
| GREAT RULER LIMITED | Private company limited by shares | Live |
| RULER INTERNATIONAL (GROUP) LIMITED | Private company limited by shares | Live |
| Hong Kong Ruler Exhibition Co., Limited | | Live |
| Hong Kong Ruler Electronic Co., Limited | Private company limited by shares | Live |
| RULER (INTERNATIONAL) LIMITED -THE- | Private company limited by shares | Live |
| RULER INVESTMENTS LIMITED | Private company limited by shares | Live |
| MIGHTY RULER COMPANY LIMITED | Private company limited by shares | Live |
| RULER SHIPPING COMPANY LIMITED | Private company limited by shares | Dissolved |
| NEW RULER SHIPPING COMPANY LIMITED | Private company limited by shares | Live |
| H.K RULER STAR FURNITURE LIMITED | Private company limited by shares | Dissolved |
| RULERETT COMPANY LIMITED | Private company limited by shares | Dissolved |
| RULEROLE LIMITED | Private company limited by shares | Dissolved |
| RULERS COMPANY LIMITED | Private company limited by shares | Dissolved |
| Measpro Rulers Limited | | Live |