... in foodstuff plants. The De-stoner is able to remove stones from grains, wheat, rice, beans, corns, sesames, ... heavy impurity at the lower layer and uses a screen to force the material and impurity to ... can be easily adjusted in a wide range with a displaying device available. A well-illuminated air suction hood ... angle of the screen can be adjusted within a scope of 7-9. Therefore, this machine is ...