Thai Nippon Steel Engineering & Construction Corp.,Ltd. (TNS) was established in 1987 by Nippon Steel Corporation (NSC), the world's leading steel making and engineering company, and the Italthai Group, Thailand's largest general contracting group.

Our Quality Policy
   Our most important criterion for Quality is the satisfaction of our customers and we recognize that Quality is one of the highest priorities of customers' satisfaction.
   Management of Thai Nippon Steel Engineering & Construction Corp.,Ltd. hereby commits to establish and maintain Quality System which guarantees Customer's quality requirements.
   Management, together with every TNS employee and every subcontractor who practiciate production, declare following Quality Statements.

Quality Statements
   We, everyone of us, have definite awareness of our responsibility for QUALITY and are never be satisfied WITHOUT
   - Customers' satisfaction 
   - Strictly following quality procedure
   - Continuous improvement of our workmanship