Maeda Seisakusho Co., Ltd. manufactures, rents, sells, and services construction equipment, industrial machinery, and steel structural products in Japan. It distributes construction machines, including Komatsu products. The company also develops, manufactures, sells, and services spider cranes for use in the stone industry, and building and repair of factories, as well as in the curtain wall installation, glass installation, and plant equipment installation works; and mini crawler cranes, mini trolleys, OEM products, cargo cranes, and aerial platforms. In addition, it offers steel blocks for primary lining of tunnel construction, boring machines for underground tunnels, articulating type heavy dump trucks for transporting muck from underground mines, specially equipped vehicles for airports and railroads, and IT and automobile equipment, as well as engages in the public construction works, such as the construction and installation of bridges, dust collectors, and water gates and screens. The company is headquartered in Nagano, Japan.