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玻璃纖維膨體砂濾材其緯紗經過部分或全部膨化紗組成由于紗線蓬松，覆蓋能力強，透氣性好，過濾效率較平幅過濾布高，除塵效率可達99.3%。過濾速度在0.6-0.8米/分。廣泛應用在反吹風濾袋器中。
Bulky Yarn Glass fiber felt partly or wholly combined by bulky yarn silk. Bulky have such features as fluffy, wide cover, good air permeability，high filtration efficiency  reach 99.3%, filtration speed reach to 0.6 -0.8m/min. Widely used in blow black bag filter.
適用于：水泥，炭黑，鋼鐵，冶金，石灰窯，燃煤等。
Application to : cement, carbon black, steel, metallurgy, limekiln, coal-fired and others.