Unitree Robotics has filed pre-initial public offering (IPO) documents with China’s securities regulator, a move that analysts said signalled that the industry is moving from “laboratory to commercialisation”.The Hangzhou-based start-up hired Citic Securities to “assist the company in preparing documents to apply for an IPO and listing” by December, according to a document filed with the China Securities Regulatory Commission’s (CSRC) Zhejiang branch, which was published on Friday.Unitree said...