Below are some facts about Unitree, and why it is leading several Chinese robotics companies towards public listings. Founded in 2016 by engineer Wang Xingxing, Hangzhou-based Unitree first became known for relatively inexpensive quadruped robots — or robot dogs. The company competes with Tesla, Boston Dynamics and a growing field of Chinese startups seeking to build machines that can eventually work in factories and homes. Unlike many humanoid startups, it is profitable, reporting adjusted net profit of about 600 million yuan. Leju Robotics, which makes the Kuavo humanoid, filed an application in May to list on Shenzhen's ChiNext market.