yeast powder1.high protien 2.appropriate proportion of restrictive amino acids , 3.highdigestion and absorption rate Yeast powder(Feed grade) 40%,45%,50 ... %,55%,60%.A. Function and use1.Is a ... , ventilated and dry place Shelf life: 12 monthsPackage 1Package 2 Yeast feed 40%,45%,50%,55%,60%