1) Needled Filmed&Antistatic Polyester Dust Collector Bag 2) 3-R(istant) (Waterproof & Oil Repellent& Antistatic) Polyester Dust Collector Bag 3) Needled Waterproof&Oil Repellent Polyester Dust Collector Bag 4) Filmed Polyester Needled Dust Collector Bag 5) Needled Antistatic Polyester Dust Collector Bag 6) Polyester Needled Dust Collector Bag a. Materials used: polyester needled filter cloth(NF-PE-SG) ,steel-plate and rubber rings. b. Working temperature:120 celsius degree normal working temperature,150 celsius degree peak working temperature. c. Weight standard:500g/m2 d. Air permeability: 200-350L/M2/S e. Dimension:dominated by customers. f. Strength: up to(700N x 750N) /(5x20cm) g. Excellent Alkali resistance&good acid resistance.