Qianxun SI was founded and invested 2 billion CNY on August 18th , 2015.By self-built ground-based augmentation system (incl. more than 2800 reference stations) and self-developed positioning algorithms, Qianxun SI provide high-precision positioning solutions for more than 1 billion users.In October 2019, Qiansun SI completed the A round of financing of 1 billion CNY, with a valuation of over 13 billion CNY.