Drying granules are obtained from corn cobs, polishing granules are obtained from walnut shells or hard fruit kernels. Corn granules prevent the formation of stains and rust by absorbing the wetness remaining on the surface of the materials after surface treatment and dry the products. Walnut granules, on the other hand, when used with various polishing pastes in the dry process, a very high gloss is obtained on the surface. They are suitable for very sensitive abrasion.