N.S.Marble specializes in the impregnation of marble, granite, stone, limestone, etc. The company uses impregnation products of the German HMK series, that penetrate the pores, creating a thick waterproof layer while allowing the stone to breathe without creating a surface membrane. With this impregnation method, the stones become waterproof and get protected from various stains such as oil, salt, ink, coffee, wine, mud, paints, markers, graffiti etc. These stains are not being absorbed but remain on the surface and get easily removed. Impregnation is recommended for bathrooms and kitchen countertops, floors, stairs,  indoor and outdoor areas. The HMK system also includes products for marbles' and granites' renovation, polishing, daily maintenance and care.