Nikkiso Co., Ltd. engages in the manufacture, sale, and maintenance of industrial and medical equipment. It operates through the Industrial and Medical segments. The Industrial segment offers industrial pumps and compressors, liquefied gas and industrial gas related devices, water quality control equipment, and carbon fiber reinforced plastic (CFRP) molded products for commercial aircraft. The Medical segment provides dialysis and acute blood purification related products. The company was founded by Keijiro Oto on March 3, 1950 and is headquartered in Tokyo, Japan.