For the way of connecting the connector housing and the shielding layer, after the terminal is crimped, install the insulating sleeve on the terminal to prevent the shielding wire from contacting the terminal, then cover the metal sleeve to a fixed position, and turn the shielding layer to the metal sleeve. On, cut off the excess shielding wire to reserve 20mm, then wrap it completely with copper foil or conductive tape, then push the sealing ring and a metal ring to the back of the metal sleeve, and tighten the shell until the shell is in good contact with the copper foil to complete the assembly. The tightening torque is controlled at 10-12N.m. When tightening the sheath, pay attention to the relative movement between the metal collar and the metal shell to avoid the wrapped copper foil or conductive tape from falling off, resulting in shielding failure.