1. Xilang fish feed processing line adopts advanced twin screw extrusion technology.Adjusting the swelling degree of the equipment can control the feed floating time in the water, so as to produce different floating and sinking characteristics of high quality special fish food, to adapt to different fish. 2. The whole line of equipment adopts food grade stainless steel material, which is sanitary and environmental friendly. The mold is changed to produce fish food of different shapes. The diameter of the product is 1-10mm, which meets the feed needs of different stages of fish from young to adult.