Model ZY338 screw oil press is the large-size equipment for continuous prepress in our country and have obtained ISO9001-2000 authentication. The main technical target achieves to the international advanced level. It is suitable for pressing cottonseed, rapeseed, castor seed, sunflower-seed, peanut and other high oil contained plants. Its characteristics are high capacity, low power consumption, low cost in running, the structure of the press cake is soft but not fragmentary. It is the excellent choose of press equipment for the large-size oil factory.