Manufacturers of marble, limestone, Icestone, quartzite, and other exotic stones for kitchen countertops universally recommend the use of a high-grade stone sealer once every 12 months to protect from the elements of daily use. However, these sealers offer little in stain and etch resistance, heat, and impact protection. Once Tianrun protective film for marble countertops is installed, your countertop will be protected from chemical etching, staining, scratches, and dings.