An oil expeller is a mechanical device used to extract oil from seeds and nuts such as mustard, sunflower, sesame, and groundnut. It works by applying pressure to crush the raw materials, separating the oil from the seed cake. Oil expellers are widely used in both small-scale and industrial oil production for their efficiency, reliability, and ability to produce pure, chemical-free oil. https://nilsanindia.com/oil-expeller-presses/