Powdertech Co., Ltd. manufactures and sells carriers for electrophotography in Japan and internationally. The company offers ferrite carrier materials for electrophotographic applications, such as copiers, printers, and multi-function printers; oxygen absorbers, sensors, and combined products under the WonderKeep, WonderSensor, and SensorKeep brand names; and functional materials for auto parts and electronic components. Powdertech Co., Ltd. was founded in 1952 and is based in Kashiwa, Japan.