Watahan & Co., Ltd. engages in the construction material distribution business and provision of construction services. It operates through the following segments: Super Center, Construction, Trading and Others. The Super Center segment operates super centers, home centers, and food supermarkets. The Construction segment handles the building steel frames, steel bridges, interior and exterior construction, self-propelled multi-dimensional parking lot construction, civil engineering works, construction and civil engineering material sales, house remodeling, events and nursing care equipment rental business. The Trading segment imports and sells raw materials for pharmaceuticals and chemical raw materials. The Others segment includes the real estate business. The company was founded on February 18, 1949 and is headquartered in Tokyo, Japan.