Ring dies of a diameter of Ø 0.8-1.8 for shrimp feed pellet mill with a centering device（IDAH 530F ring die Ø1.0、Ø1.2、Ø1.6 with a hole open porosity of 60000 holes, 56000 holes, 38000 holes）;

Service life of the ring die can reach 8000-10000t, the production time can reach over 2500 hours. Under the same conditions, the product service life exceeds that of the same industry by more than 30%;

Shrimp feed with consistent length, uniform color, good water resistance, creating higher value for enterprises.