Fans can be categorized into mini fans, portable fans, standard fans and large fans according to their sizes. Mini fans are small and delicate, suitable for carrying around or as decorations; portable fans are of moderate size, easy to store and suitable for daily use; standard fans are of moderate size, both practical and ornamental, suitable for a variety of occasions; large fans are of large size, commonly used in stage performances, dance or home decoration, with outstanding visual effects. Different sizes of fans meet the diversified needs from daily use to artistic performances, combining practical functions and aesthetic values.