Inflatable Air Blower quality to identify

"Inflatable Air Blower", the most important indicator intuitive. Units of CFM. Quality is a core fan the greater the amount of wind, the smaller it sounds excellent, of course, some companies will do a lot of speed, but may not be able to do a great amount of wind, my company at the same speed, you can achieve a higher air flow. As long as the fan is running, will have its own wind. We are talking about the wind noise is its own voice. The real "f雷竞技 " noise is relatively sharp or Kaka. Units of db. The human ear generally to 23db above the voice of the human sensitivity, there will be 1-3 db error. This is one of the core part of the "f雷竞技 " of. Leaf fan frame, IC, bearing a three-part core fan. Bearing a direct impact on its life. Will be introduced later in the difference between the bearings.