Can be cleaned with cleanser or scouring powder. If it cannot be cleaned, you can use a water polishing machine and water polishing discs (there are thick and thin discs) to polish off the scratches, and then use tile polish for polishing. To deal with stains, you can go to the supermarket and buy special detergent. Option 2: Find a cleaning company to handle it, and it needs to be very professional! Don't do it for someone who is not professional. If you don't do it well, it will be a mistake. Renovation method: The ceramic tile renovation and refitting system can be used with the Italian Stonedesk brand ST200 dual-purpose renovation and crystal surface treatment machine and a specially manufactured diamond disc for treatment (you can also use a hand-held water grinding and polishing machine), which can transform a piece of ceramic tile from ten years to one year. The century-old marble and ceramic tiles are 100% completely refurbished. The method is to grind off the damaged surfaces of the marble and ceramic tiles, and then grind them in several stages from coarse grinding to medium grinding and fine grinding until they are smooth, making the marble and ceramic tiles smooth. Restore its natural original color, and then use the chemical action caused by the pressure and heat of the stone with the same crystal face treatment to strengthen the protection of the crystal face. Compared with replacing the marble project, it can save 80% of the cost. First. Scope of application: Can be used for marble (marble), ceramic tiles, granite and terrazzo. Second. Preparatory work: 1. Clean the floor first. 2． Seal furniture or corner panels again to avoid stains. C. Machinery, equipment and chemicals 1. The Italian ST-200 marble refurbishing machine has a power of 1500W, a weight of 64KG, a working width of 425MM, and a water tank (you can also use a hand-held water grinding and polishing machine, which is available in power tool stores. For the refurbished disc, go to the stone tool store in the stone market purchase). 2． Accessories include: ST-1200 Diamond Pad Drive Plate. ST-FX-Diamond discs of various levels from 50 to 3000. Man. Work process 1. Put a small amount of water on the ground. 2． Start the refurbishing machine, first use the lowest grade (thickest) diamond pad to smooth the stone (brick) surface first. 3. Then change to a higher grade (fine) diamond pad, increasing the grade each time, no less than two grades, and finally polish until the ground is smooth. 4. Wash and dry the floor. 5. Use the crystal surface treatment method to process the surface until you are satisfied. The following types of agents can be used: STARS? (STARS?) STA-400 polished tile crystal hard polishing series is specially used for polishing tiles, microcrystalline stone, vitrified tiles, etc. Due to their compact structure and high hardness, their crystal surfaces are polished. It is a difficult crystal hardening operation. This series of products is specially designed for polished tiles and vitrified tiles, which solves the problem of difficult crystallization of polished tiles in the past. STARS? (STARS?) PDC-1 polished tile crystal hard polishing slurry is generally used for polishing crystal surfaces. After grinding, it can quickly improve the anti-slip and anti-fouling ability of the surface. STARS? (STARS?) PDC-2 Polished Brick Crystal Hard Polishing Powder can repair small scratches on the stone surface and form crystal faces on the stone surface. After grinding, it has a strong luster and a thick protective layer. STARS? PDC-3 polished tile crystal hard care solution is a daily maintenance and care agent for polished tiles. It has hardening, glossing and anti-slip functions, and is simple, fast and convenient to operate. Supplementary answer: Well, it is more practical to replace it with a brick. But if you have just renovated it, just leave it like that as a souvenir. Don’t do such stupid things in the future. Don’t do it. . . . . .