Maruichi Sun Steel Joint Stock Company (Công Ty Cổ Phần Maruichi Sun Steel) (Vietnam)

Maruichi Sun Steel Joint Stock Company (SUNSCO) is a Vietnam-based steel tube and pipe manufacturer with 100% foreign investment, backed by Japan's Maruichi Steel Tube, Toyota Tsusho, and JFE Steel. The company produces welded steel pipes and tubes and related steel coil products serving construction, mechanical engineering, automotive, furniture, and industrial infrastructure applications. Its product portfolio includes round, square, and rectangular hollow sections, structural and mechanical pipes, and coil-based inputs processed to Japanese and Vietnamese standards. SUNSCO operates large-scale manufacturing plants in southern Vietnam with integrated processes for slitting, forming, high-frequency welding, galvanizing, sizing, finishing, and laboratory testing, supported by advanced quality systems derived from Japanese shareholders. The company distributes nationwide through dealer and project channels and exports meaningful volumes to regional markets, benefiting from strong port access and shareholder-linked customer networks. Key assets include high-capacity ERW pipe mills, galvanizing lines, and the SUNSCO brand associated with Japanese-quality positioning. Strategically, the company is positioned as a premium steel-tube supplier emphasizing strict quality conformance, stable delivery for large projects, continuous technology upgrading, and expansion of product sizes and grades to support Vietnam's infrastructure growth and industrial import-substitution demand.