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Meta-Aramid Needle Felt Filter Bag for Metallurgy Furnace Heat Resistant Dust Collector Filter. OEM Customization: Custom diameters, lengths, top/bottom designs, and finishes available. Excellent Abrasion Resistance: Meta-Aramid fibers offer superior wear resistance for high dust loads. Long Service Life: Typically lasts 2-4 years, reducing maintenance and shutdown costs. ISO 9001 Certified: Production facility certified for consistent quality and reliability. Fast Delivery: 15-25 days for standard sizes, 25-40 days for custom sizes. Wide Application Range: Ideal for asphalt plants, cement kilns, metallurgy, and power generation.