1,purity the waste oil to diesel 2,deal waste oil,plastic,tyre oil,waste engine oiland crude oil 3,negative pressure prodution Main ... .6. Have multiple purposes.Products & Industries for Oil Refining processor 1. Raw oil extracted from waste plastics and scrap rubber 2 ... oil, e.g. waste diesel, waste engine oil and waste oil dregs etc 3. Waste raw oil 4. Waste washing oil The vacuum used engine oil ...