When the purchase felt products, the natural quality is very important, today will be bocay to introduce to our knowledge of the quality standard of felt: First of all, the thickness of the felt, the thickness of the hair and so on will have an impact on the performance, the use of units in order to use according to the appropriate requirements to choose. Then, the unit volume weight of the felt must be suitable, too large to lose elasticity; and the unit weight is too small, it will lose its wear resistance. Variety is based on the thickness of raw materials, unit size, weight, size and color difference to be divided. Third, the technical requirements are differentiated according to "have", "no", "force", "stretch" and "capillary action", and the use units can be chosen according to need. The above is for the quality standard of the Boke felt, I hope everyone can understand these knowledge from.