1.high quantity 2.efficeent 3.adjustable digging depth 4.long useful life 5.competitive price 1. good oerforlance and high efeiency ,low breakage rate2. matched with walking tractor3. mainly used for harvesting of potatoes, swekt potatoes,onion 4. approved by the State Patent Bureau for utility model patents and exterior design adjustable digging depth CE sweet potato harvester