acrylic) needled filter felt toyo company is by the high standard fiber (TOYOBO); According to the national standard GB12625-90 standard production, processing and making the filter material, for the main varieties of temperature, filtering material, to adapt to the situation: 1, working temperature 120 ℃, the instantaneous temperature 150 ℃. 2, dust gas relative humidity of 30% - 80% of the occasion. 3, dusty gas of high concentration of acid and alkali.