| Company Name | Type | Status |
|---|---|---|
| MAINFOAM POLYSTYRENE LIMITED | Private company limited by shares | Dissolved |
| POLYSTYRENE FOAM PRODUCTS FACTORY LIMITED | Private company limited by shares | Live |
| SUNNY POLYSTYRENE FOAM COMPANY LIMITED | Private company limited by shares | Live |
| GENERAL WELLY POLYSTYRENE CO. LIMITED | Private company limited by shares | Dissolved |