It was founded in 1940 and is headquartered in japan. KOA Gorp manufactures and markets high quality resistors and other electronic devices. It is the world's leading resistor manufacturer. KOA products include thick / thin film resistors, wire type resistor, resistor, inductor, sensor network, integrated components, circuit protection, LTCC module and EMI/ EMC filter components, widely used in precision instruments, automotive, medical, aerospace, military and alternative energy. KOA has passed ISO9001-2008 and TS16949 certification, to better serve customers around the world, KOA has now in Asia, Europe and the United States to establish a huge international sales network.