... PP Oil Filter, Oil Purifier & Filter Cloth 1) oil filter, oil purifier, filter 2) material: PP 3) multi-applications 4) OEM Polypropylene (PP) Oil Filter, Oil Purifier, ... liquid phase and liquid phase, etc.Application:Made up with different kinds of micron grade PP short fiber, ... PP liquid filter bag is with very good working capability on filtering of waste water, oil & water separation, paint, ...