Bone grinder series used in birds bone, livestock bone,pork skin, chicken skin,fish meat and so on. Bone grinder ... widely used in:Birds bone:chicken bone, duck boneLivestock bone: Pork bone, beefbone and sheep bonePocrk skin, chicken skin, fish, meat ... also widely used in a variety of pet food, sausages, ham, luncheon meat, meatball, salty flavor, bone marrow extract, frozen food ...