How to buy high-quality 220V AC Cooling Fan?

Quality "220V AC Cooling Fan" should have the following characteristics: appearance, lines, color nice; plating smooth, shiny, no yellow, rust, peeling and waterlines phenomenon; film hard, smooth, no bubbles, scratches, no paint off, open at the end, hanging paint or paint mixed different phenomenon; "220V AC Cooling Fan" decorative piece without damage, front and rear grille fit tightly, no distortion, no solder wire nets loose off welding and so on. In the most unfavorable position "220V AC Cooling Fan" with the plane 10° angle, the fans should not be overturned.