... : CE certificate 2. pellet size: 6mm-12mm 3: pellet length:20mm-50mm 4: warranty period 5 ... The new product FD series “double vertical ring-die pellet mill”, Research,Design,Produced by ourselves,With alone ... shape,more reasonable structure and stability,Professional for Wood,Rice husk,Peanut shell,Bamboo and Palm fiber ... Approved Bioenergy New design FD series double vertical wood pellet mill