Certificate:KOSHER/FAMI-QS Specification: 0.1%, 1%, 2%, 5% Standard: GB/T 17819-1999 GB/9841-88 Packing: 20kg/carton, 25kg/ca taking part in the metabolism of one-charcoal-gene, facilitating hematopoiesis, and treating pernicious anemia, VB12 can be used as nutritious feed additive for livestock and poultry, to promote the growth of young poultry. Viatmin B12 Feed Additive