duxcasino20freespins|China's deep-sea heavy-duty mining vehicle reaches record depth in sea trials super 2024-07-09 11:25:05 Nature 19 SHANGHAIduxcasino20freespins, July 9 (Xinhua) -- China's deep-sea heavy-duty mining vehicle has completed sea trials at depths exceeding 4,000 meters, the Shanghai municipal government said Tuesdayduxcasino20freespins.■