The surface of the folding fan used materials are high quality silk. The bone of the folding fan used materials are The hard winter bamboo.Size respectively have large， medium， small. The radius of the large size is 33 cm， the size of the folding fan open is 61 cm. The radius of the medium size is 26 cm， the size of the folding fan open is 48 cm. The radius of the small size is 23 cm， the size of the folding fan open is 43 cm.All types of error only up to 1 cm.