1.It contains Mn, Zn, Cu, Fe, Mg, K, I, Se and Co et. 2.satisfy shrimp growth needing mineral elements. 3.premix for poultry Function:This item is produced according to large-scale meat chicken nutrition demand and experiment result. It contains Mn, Zn, Cu, Fe, I, Se and Co etc. 7 mineral elements, among the Se is very abundant, promote chicken growth, prevent lacking Zn, Mn and Se diseases, ...