... than 52 The new product FD series “double vertical ring-die pellet mill”, Research,Design,Produced by ourselves,With alone shape, ... warranty time,Working manner is from inside to outside press,Centrifugal force and extrusion pressure together,Produced more capacity, ... The special design is 4 rollers working,Increase press rate then increase capacity,Ring-die is “vertical double-deck”structure,It can ...