Ceiling Filter TWA-1 series, with high adhesive surface, has high absorbability to various dusts. We use anti-broken synthetic fiber, the fiber density is increased layer by layer, and high adhesive TC fabrics are affixed on the outlet side. TWA-1 can block and absorb the dust molecules more effectively; it does not only keep air more clean and air flow more sufficient, but also distribute air flows evenly in the whole working space.