Siam Steel International Public Company Limited.

 First business operation began in 1953. With more than 7 decades of experience in designing, manufacturing and distribution, Siam Steel International plc. expands its business into a wide range of industries, manufacturing high quality products with application of sophisticated production technology to supply for domestic and worldwide markets. At present, Siam Steel International plc. stands as one of the leaders of the Thai industry involving 3 major product categories; Furniture and healthcare Group, Construction Materials Group , and Renewable Energy Group.

The Company who has attained ISO 9001,ISO 14001, ISO 45001, Standard for Corporate Social Responsibility (CSR-DIW) certificate as well as was approved to use the Green Label and received the Certificate of TGO Guidance of the Carbon Footprint for organization From Greenhouse Gas Management Organization (Public Organization) and National Science and Technology Development Agency and received the Certificate of Green Industry at the 3rd level; Green System, Systematically Environmental Management, Monitoring and Evaluating and Revising for Continuous Development from Ministry of Industry.