Links
| Company | Links |
| The Siam Cement Public Company Limited (SCG) | www.scg.co.th |
| SCG Chemicals Company Limited | www.cementhaichemicals.com |
| Thai Plastic and Chemicals Public Company Limited | www.thaiplastic.co.th |
| The Nawaplastic Industries (Saraburi) Company Limited | www.elephantpipe.com |
| Nawaplastic Industries Company Limited | www.windsor.co.th |
| Nawa Intertech Company Limited | www.nawaintertech.co.th |