Yongnam Holding Ltd., through its subsidiaries, provides engineering and construction services. It operates through the following business segments: Structural Steelworks, Specialist Civil Engineering and Mechanical Engineering. The Structural Steelworks segment designs, fabricates, supplies, and erects steel structural frames for long span aircraft hangars, high rise buildings, commercial and industrial buildings, and infrastructure related developments. The Specialist Civil Engineering segment provides temporary support to cofferdam during a construction to prevent inherent risk for safety and damage to adjacent property. The Mechanical Engineering segment focuses on installation of mechanical equipment and plant; supply fabrication and installation of mechanical components; and plant maintenance. The company was founded by Tin Nam Tan on October 19, 1994 and is headquartered in Singapore.