Initially, Central Soya used an expeller to extract oil from the crushed soybeans. The final major class of oilseed presses, the powered press, is dominated by the expeller. It is an edible oil obtained by expeller pressing and sometimes followed by solvent extraction. The second, mechanical system is extraction by oil expeller and rotary mills. Oil is then extracted using a traditional oil expeller known locally as Chepuwa. The earliest expeller presses utilized a continuous screw design. In the late 1990s, the oil expeller was removed to the Gandhi Mandapam complex. They may also be crushed in an expeller and rotary. Pressure involved in expeller pressing creates heat in the range of . Surya is glorified in Vedic mantras as the expeller of darkness and evil. However in Korean folkloric belief, the cat can be the expeller of evil spirits. Expeller processing cannot remove every last trace of liquid (usually oil) from the raw material.