Extracted from beef skin or bone.There are many grades such as technical skin gelatin glue,bone glue or animal collagen with colors various in white, light yellow,yellow or brown and size various from 8mesh to 60mesh.The jelly strength differs from 80Bloom to 330Bloom with viscosity from 5.0mpa.s - 11.0mpa.s. For their good foaming ability and high in viscosity or protein, they are widely used in paintballs,matches,furniture,hard cases,krafter paper,book-binding and animal feeds,ect.