... blown non-woven material*Use high fat soluble PP as raw materials, and apply our latest melt-blown and post ... filtering efficiency, and low resistance. *Performance: environment friendly, non-toxic, non-smell, high efficiency, low resistance, white and light, ... medium, high-efficiency filter, air purifier, and dust collector.*Models and ParametersModelBasic Weight g/m2Thickness(mm)Efficiency %Initial ...