Toshiba, Japan's largest semiconductor manufacturer and second-largest integrated motor manufacturer, is part of Mitsui Group. The company was founded in July 1875, formerly known as Tokyo Zhipu Electric Co., Ltd., and was formed by the merger of Tokyo Electric Co., Ltd. and Zhipu Production Co., Ltd. in 1939. Toshiba's business areas include digital products, electronic components, social infrastructure, home appliances, etc. Since the 1980s, Toshiba has changed from an enterprise with household appliances and heavy-duty motors as the main body to a comprehensive electronic and electrical enterprise including communication and electronics. In the 1990s, Toshiba has made rapid development in the fields of digital technology, mobile communication technology and network technology, and has successfully transformed itself from a giant in home appliance industry to a pioneer in IT industry.