Toho Kinzoku. 

Toho Kinzoku Co., Ltd. manufactures and sells tungsten, molybdenum, and metal products in Japan. Its products include tungsten/molybdenum wires/rods, plates, processed plates, discharge lamp electrodes, electron tube electrodes, discharge needles, and high temperature atmosphere parts; molybdenum parts for magnetron; copper tungsten heat sinks; tungsten and molybdenum alloy products; TIG welding rods; and welding tungsten electrode rods. The company also offers cemented carbide products, electrical contact products, and civil engineering tools. Toho Kinzoku Co. was founded in 1918 and is based in Osaka, Japan.