... pet fish , floating time: 8 hour pet fish feed pellet machine , floating fish feed pellet mill , screw floating fish feed pelle ... system , and adopt the combined spring and spindle cutting method 2 the pellet screw made of special wear-resistant and heat ... resistanc 38Cr.Mo.Ai steel , very durable 3 pellet diameter : 2-10mm , and the pellet can float for 4-6hours , the ...