Wash the car to be polished (partial polishing, only clean the area that needs polishing).
To remove deep scratches, first use 2000# sandpaper for sanding and clean the dust with water.
Spread the wax evenly with a sponge locally. Do not apply to the whole car at once to prevent solvent volatilization.
Use a polishing machine with a spherical medium sponge disc. Ensure the surface is clean.
Run the polisher at low speed (600 rpm) to push wax, then increase to 1400 rpm.
Collect all wax until brightness is improved and scratches are removed.
After construction, clean the vehicle. Use car wash liquid to remove residual wax before glazing or coating.