242-3 Prepress is a kind of oil pre-pressing machine. It is suitable for a vegetable oil mill with pre-pressing and solvent extraction process or twice pressing. It can process vegetable oil seed and materials with high oil content, such as shelled peanut, shelled cotton seed, rapeseed, sunflower seed and so on. This machine is reasonable in structure, sturdy and durable in operation. It is easy to operate and has a great capacity. At present, it is the best corollary equipment for the vegetable oil industry.