It is one special equipment for making wood chips. It is widely used in stock workshop section of industrial manufacture, for example, the flakeboard, fibre board, building board, straw power plant. Its raw materials are mainly small diametre, leaving thing of wood cutting(branchs, wattle) and process leaving thing of the wood raw materials(board skin, board bar, log core, waste veneer) and so on. It also can cut the non-wood materias, like sugar cane, bulrush, gross bamboo and so on.