Meat and bone meal from our factory use these things as materials: poultry meat scraps, chip, skin, meat slag, limbs and so on of various of livestock, expired meat from meat factory. Expired meat and fish from refrigeration plant, original skin of cattle cutting down from tannery factory, picked out meat from bone glue factory, death animal carcass which was freezed from Grassland pasture and so on. Suppliers of raw material for our factory are all cooperated for many years, so we have a stable supply channels. As meat and bone meal had take from different raw materials. So its physical and chemical index is nor identical also, products of general protein content from 50% to 55%, phosphorus 4%, calcium 8%, crude fat 6%-12%; crude fiber 2.5%-3.5%, methionine 0.6%-0.8%, 1.5%-2.6% lysine is the livestock and aquatic feed of high quality protein and calcium phosphorous raw materials.