... to your needs.2. The screw of fresh fish feed machine is made by the 38 chromium, molybdenum, aluminium which are special ... , high temperature, and high moisture, tempering firstly, then mold by heating, with the advantage of the wear-resisting and long life.3 ... hous. They are easily digested by the fish and poultry, and don't pollute the water.Compared with the powder and pellet, the ...