Pretreatment: oil removal, release agent removal and electrostatic dust removal; High-end models are treated with plasma to improve paint adhesion and prevent paint peeling in the later period Primer spraying: seal the plastic surface and strengthen the adhesive force of paint Automatic electrostatic spray gun shall be painted with color paint, and handle, air nozzle and air outlet surface shall be painted uniformly Baking/UV curing paint surface Optional: Sprayed with nano fingerprint-proof finish Quality inspection: check dust spot, flowing paint, color difference, paint peeling and scratch