Sankyo Tateyama, Inc. is mainly engaged in the manufacture and distribution of construction materials and other materials. The Company operates in four business segments. Construction Material segment involves in the purchase, manufacture and sale of construction materials for buildings, housing and exterior use. Material segment involves in the casting, extrusion, processing and sale of aluminum and magnesium. Commercial Facilities segment involves in the sale of general-purpose display fixtures for shops, the manufacture and sale of standard billboards and other types of billboards, and the maintenance of shops and related equipment. International segment involves in the casting, extrusion, processing and sales of aluminum overseas.