Carefully insert the next big "Mini Air Cooling Fan", with a central circular sticker fan trademark carefully opened, you can see the center of the central shaft is exposed, with Vaseline (very cheap, pharmacies are selling) carefully painted full, round stickers can be carefully sealed with a trademark. "Mini Air Cooling Fan" principle: mostly used to smear Vaseline hand, to prevent winter dry skin, chapped, it has a feature: when the fan generates heat, Vaseline will melt gradually penetrated into "Mini Air Cooling Fan" Bearing conducted lubrication, off the fan stops working, the temperature will drop down after solidification Vaseline on standby, this method than adding any lubricant effects are good.