... producting charcoal by wood wastes,such as sawdust,crop waste.High charcoal forming efficiency machine made charcoalWe are long-established production ... jointly by Tsinghua University and us in 2010,is made with quality workmanship,large entrusion density and fast forming ... machine is adapted to a wide range of raw materials ,such as sawdust, wood scraps, bamboo scraps, bark, branches, walnut shell ...