wood pellet machine 1.CE certificate 2.pellet size:6mm-30mm 3.pellet length:20mm-50mm 4.warranty period for 5 years ruiyuan flat die wood/sawdust pellet machine ruiyuan flat die wood/sawdust pellet machine a new generation of energy-saving products,researched and developed by our researcher newly. It is mainly used to compress crushed corn straw, plant waste, bamboo powder, grass, straw, rice ...