Reuters. Chinese smartphone giant Xiaomi Corp will build a plant in Beijing capable of producing 300,000 electric vehicles a year, authorities in the capital reported on Saturday. The plant will be built in two phases and Xiaomi will also have the headquarters of its automobile unit and sales and research offices in the Beijing Economic and Technological Development Zone, said the economic development agency Beijing E-Town, backed by the government, on your official WeChat account. Read also: Apple and Xiaomi will be out of the medal table of the market in Mexico; Oppo goes for the bronze Beijing E-Town said…