Koike Sanso Kogyo Co., Ltd. engages in the development, manufacture, and sale of various types of gases, welding and cutting machines. It operates through the following segments: Machinery and Equipment, High-Pressure Gas, Welding Equipment and Others. The Machinery and Equipment segment handles medium and large cutting machines, automatic gas cutting machines, plasma heating, and welding machines. The High-Pressure Gas segment includes oxygen, nitrogen, dissolved acetylene, propane gas, argon gases and medical equipment. The Welding Equipment segment covers welding rods, electric welding machines and safety protective equipment. The Others segment deals with the manufacture, purchase and sale of combustion exhaust gas treatment equipment, helium liquefier and heating plasma equipment. It also provides the steel plates, aluminum products, stainless steel and other metal products. The company was founded on October 15, 1918 and is headquartered in Tokyo, Japan.