Xiaomi's investment house of IoT surpasses 300 companies

Xiaomi, the Chinese comapny famous for its budget smartphones and a bevy of value-for-money gadgets, said in a filing on Thursday that it has backed more than 300 companies as of March, totaling 32.3 billion yuan ($4.54 billion) in book value and 225.9 million yuan ($32 million million) in net gain…