... 1 meter 2. OES level 3. high filtration efficiency 4.basic weight 380g white non woven filter media GH380-OE1. 50m/roll2 ... white OE level 4. for air filter Heat melt filter non-woven, is applicable for automotive environmental protection filter. Specification of ... 1997, Holy Chemical Fibre Product Factory was founded, produce Acupuncture Non Woven. •2001, Relocated to Huangjiang Town, Dongguan City and ...