Andrew Kang suggests the humanoid robot industry's potential is significantly underappreciated, projecting Unitree could IPO next year at a $20-50B valuation. This valuation is based on Unitree having already sold approximately 10,000 humanoids, which is a tiny fraction of the projected annual sales for the sector. Investors should monitor the Unitree IPO next year as a potential entry point into a market Kang believes will be the largest product market in history.