S E Corporation is primarily engaged in manufacturing construction materials and equipment for repair and reinforcement work. The Manufacturing and Selling of Construction Materials and Equipment segment manufactures and sells civil engineering construction materials for use in structures, such as fasteners, bridge collapse prevention devices, cables, and others. The Manufacturing and Selling of Building Materials segment manufactures and sells building materials such as separators, hanging bolts and others. The Construction Consulting segment provides a range of construction consulting service. The Repair and Reinforcement Work segment is engaged in the repair and reinforcement work of bridge structures, tunnels and others, and other construction and inspection of civil engineering and building work.