This series of machine can produce chips of high quality. They can be used in paper mill, particle board plant, fiberboard plant and chip production bases. They can cut logs and small wood into high quality chips with even length, smooth chip cut and uniform chip thickness. They can also cut branches and slabs. This chipper consists of frame, knife disc, feed and discharge spout, case and electrical control system, etc. The chips length is adjustable in accordance with the requirement of the paper pulp, particle board and fiber board industries. Compact in structure, easy to operate, high capacity, excellent production and low energy consumption, which make the machine the ideal equipment for chip production industries.