Tencent Holdings-backed AgiBot plans to acquire a controlling stake in a Shanghai-listed company for roughly 2 billion yuan (US$279 million), sparking speculation that the humanoid robot maker could pursue a back-door listing less than three years after it was founded. Agibot, the start-up also known as Zhiyuan Robotics, has offered to buy at least 63.62 per cent of Swancor Advanced Materials through affiliates Shanghai Zhiyuan Hengyue Technology Partnership and Shanghai Zhiyuan Xinchuang...