Businesses in this category extract and process oils from oil-bearing plants, seeds and fruits. Raw materials may include rapeseed, sunflower seed, soya beans, palm fruit, olives and other crops. Production methods include cleaning and preparing the crop, pressing or crushing it, and, where appropriate, using further extraction methods to recover more oil. The resulting oil may be filtered, refined or treated to adjust its colour, flavour, smell and shelf life. Products are supplied in bulk to food manufacturers, wholesalers and other commercial customers, or packaged for retail and catering use. They include cooking and frying oils, salad oils and oils used as ingredients in processed foods. Some producers also make plant oils for non-food uses, such as cosmetics, soaps, lubricants or biofuels. Solid residues left after oil extraction, including oilseed meals, may be processed or sold for use in animal feed.