Gravity grader dry de-stoner glsf63 is mainly used for removing various forging objects in grain and oil crops such as rice, wheat, peanut, soybean, rapeseed, sesame, mung, bean, beadsman and sun-flower seed. Features: 1.One machine has various applications, combines working procedures and simplifying the follow. 2.Having high output, small power and high foreign object removing efficiency. 3.Having compact structure, small space occupation and convenient installation and maintenance.