... .felt bag. Welcome to Nangong Huari Felt Factory heat resistant industrial wool felt1.100%wool2.any color.any size3 ... are mainly used in mechanism, electromechanical, chemical industry, cement, textile industry,and can also be used for marble, ... insulation, insulation, heat insulation.It is widlely used for machinery ,mechanics & electronic,chemical industry,cement industry,light textile industry ...