... used the filter 5566 of AoSiLong from Korea.2.Hepa air filter is for heavy-duty truck Steyr models.3.Advantage: a) This ... filtration equipment available, such as air filter, water filter, oil filter, carbon filter, acid filter, oil purifier, filter bag, bag filter, filter ... standard right here in CHINA.Reason 6We can provide sample for quality testing and return sample cost when customer place the ...