... or as customers' request 2,purity:99%,90%.80% . 3,mesh:8-20.20-40,40-60,60-100 4,Low ... customers' requests.3)Granule sizes:8-16mesh, 20 mesh, 24 mesh,30 mesh, 40 mesh, 60 mesh, 80 mesh, 100mesh4)Package size:3g/bag, 50g/bag ... design, packing material of the packing bag, packing carton, packing box etc all can be depended on the customers6)Shelf time ...