Curing agent can be polished in a few hours: after the colorant is completely dried, it can be coated with curing agent, and then polished after 12 hours. Use a mill to grind the ground again (to make the smooth surface of the solidified ground rough), clean it up, and then carry out epoxy construction as required. Brush the primer first, and then brush the middle coat after the primer is completely cured. After the undercoat is cured, use 50/ 120 grinding head (or sand skin and resin sheet) to polish the undercoat sand layer, clean up a batch of putty, and apply topcoat (topcoat) after the putty is cured.