(Bloomberg) -- The raucous debut for China-based U Power Ltd. sent shares soaring 620% and triggered a bevy of halts for volatility as investors flip shares of the newest company to list in the US.Most Read from BloombergElon Musk’s Wealth Plunges $13 Billion as Drama Unfolds Across EmpireAirline Blunder Sells $10,000 Asia-US Business Class Tickets for $300SpaceX Says It Blew Up Starship Rocket After Engine MishapUS, Ukraine Allies Consider Near-Total Ban on Exports to RussiaMeet the Guy Who Sco