According to the differences of filtering materials, Filtering Batting can be mainly classified into four types: Synthetic Fiber Filtering Batting, Nonwoven Fabric Filtering Batting, Fiberglass Filtering Batting and Activated Carbon Filtering Batting.

    Nonwoven Fabric Filtering Batting, using PP or PET as raw materials, can be made through Melt-blown, Needle-punched, Spunlaced or Spunbonded process; Synthetic Fiber Filtering Batting, Fiberglass Filtering Batting and Activated Carbon Filtering Batting can mainly be made through Spray-bonded, Hot-air-through or Needle-punched process;

    According to the Native Standard GB/T14295, Filtering Batting can be classified into: Coarse (Initial)-efficiency, Medium-efficiency and High-efficiency;

    According to the European Standard, Filtering Batting can be classified into: G1、G2、G3、G4、F5、F6、F7、F8.

    According to filtering efficiency, Filtering Batting can be classified into:

    1、Initial-efficiency Filtering Batting：

    including Coarse-efficiency Filtering Batting, Vent Filtering Batting, Blue-white Filtering Batting, Green-white Fiberglass FilteringBatting, Flame-retarding Nonwoven Batting, High Temperature Resistance Initial-efficiency Filtering Batting, High Temperature Resistance Fiberglass Filtering Batting, Activated Carbon Filtering Batting, Winding Filtering Batting, Coconut Fiber Filtering Batting, Vine Fiber Filtering Batting, Initial-efficiency Nonwoven Fabric Filtering Batting, etc; Filtering levels are G1、G2、G3、G4.

    2、Medium-efficiency Filtering Batting:

    including Medium-efficiency Fine Fiber Filtering Batting, Canopy Filtering Batting, Medium-efficiency Needle-punched Filtering Batting, Medium-efficiency Ironing Filtering Batting, Medium-efficiency Nonwoven Fabric Filtering Batting, Melt-blown Filtering Batting and etc, which can filter dust particles are less than 5μm and greater than 1μm, are mainly used for secondary or ultimate filtration after coarse filtration.

    3、High-efficiency Filtering Batting:

    It can  filter dust particles whose sizes are 0.5μm, so it is mainly used for manufacturing high-efficiency air filters which are used for particularly high filtration requirements such as hospitals or laboratories.