... cottonseed, rapeseed, oil sunflower seed, sesame, bancoul nuts, almond, walnut, tea seed, prickly ash seed, oil palm fruit, castor bean ... has been prolonged the service life by using the high quality steel and processed by carburizing heat treatment, thus reducing ... cottonseed, rapeseed, oil sunflower seed, sesame, bancoul nuts, almond, walnut, tea seed, prickly ash seed, oil palm fruit, castor bean ...