"Waterproof Cooling Fan" appearance of quality requirements modeling, line, tone nice. Plating requires smooth, shiny, no yellow, rust, peeling and waterlines phenomenon. "Waterproof Cooling Fan" film requires hard, smooth, no bubbles, scratches without paint off, open at the end, hanging paint or paint mixed different phenomenon. "Waterproof Cooling Fan" trim should be no damage, front and rear grille fit tightly, no distortion, grille wire sealing off the joints loose and so on.