Ishikawa Seisakusho Ltd. engages in the manufacture and sale of industrial machinery and textile equipment. It operates through the following segments: Paper Machinery, Contract Production, Defense Equipment, and Others. The Paper Machinery segment produces corrugated cardboard box printing machinery and paper processing machinery. The Contract Production segment accepts commissioned production of various machineries from other companies. The Defense Equipment segment manufactures and sells naval mines. The Others segment includes textile machinery and electronic parts manufacturing machinery. The company was founded by Yoji Naoyama in October 1921 and is headquartered in Hakusan, Japan.