| ROHM ASIA COMPANY LIMITED | Private company limited by shares | Dissolved |
| JINHONG ROHM AND HAAS CHEMICAL CO., LIMITED | Private company limited by shares | Live |
| Rohm and Haas HK China Investments Limited | Private company limited by shares | Dissolved |
| ROHM AND HAAS (FAR EAST) LIMITED | Private company limited by shares | Live Commenced dormancy on 12-Dec-1995 |
| Rohm and Haas HK Dongguan Holding Limited | Private company limited by shares | Live |
| ROHM AND HAAS ELECTRONIC MATERIALS ASIA LIMITED | Private company limited by shares | Live |
| ROHM SEMICONDUCTOR HONG KONG COMPANY LIMITED | Private company limited by shares | Live |
| ROHMANN ASIA LIMITED | Private company limited by shares | Live |
| Germany Rohmax International Petrochemical Limited | Private company limited by shares | Live |