Look at what kind of fan, ordinary play to play a few dozen dollars to buy a can, those who play the folding fan price is relatively expensive, hundreds of thousands of dollars, Sheng Feng Su fan in the most common is a few hundred dollars.
Single-sided fan is only one side of the fan, double-sided fan is both sides of the fan. Fan material has a wooden, bamboo, relatively speaking, bamboo toughness, quality is higher.