There are two types of island fibers: one is indefinite island fiber; One type is Dingdao Island Fiber. The number of fiber islands on the islands of Wuding Island is generally between 200 and 800 islands. Due to the large number of islands, indefinite island fibers form short flocs of 3-5 centimeters. During the dyeing process, dyes are not easily penetrated into the fibers, making it difficult to color. The fineness of 64 islands is closest to the natural suede fineness. After reduction (using toluene for reduction), the fineness of 64 island island short fibers can reach less than 0.03 denier (diameter of 5 microns, each filament is only 1/200 of a hair). Uniform dyeing, soft touch, most suitable for making garment leather