the pretreatment for vegetable oil processing or edible oil processing usually means the working procedures of detaching impurities out of the edible or vegetable oil materials. These impurities are generally referred to as organic and inorganic impurities. The organic impurities include the stem leaf, cord, chemical fibers, velveteen and their seeds. The inorganic impurities, however, sometimes mean soil, dinas and metal.Castor Oil Plant Machine vegetable oil processing industry involves the extraction and processing of oils and fats from vegetable sources. The preparation of automatic high quality hay press baling machine made in china raw materials includes husking, cleaning, crushing, and conditioning. are your trustable manufacturer and supplier of small scale oil production line. We sale quality small scale oil production equipment, we offer the greatest service and most Competitive prices about Castor Oil Plant Machine!