... warranty period 5 years The new product FD series “double vertical ring-die pellet mill”, Research,Design ... shape,more reasonable structure and stability,Professional for Wood,Rice husk,Peanut shell,Bamboo and Palm ... fiber etc.Advantage:1.Gearbox:Continue the SKJ series New generation gearbox,Driving with high-precision gears ... CE Approved Bioenergy New design FD series double vertical wood pellet mill