It is best to wipe the marble countertop regularly with a slightly damp cloth with a mild detergent and then dry and polish it with a clean soft cloth.
When the surface is stained, it is advisable to use some light corrosive agents, such as lemon juice or vinegar, and do not use soap or baking soda to wipe the essence of the marble. You should also pay great attention to lemon juice. The residence time should not exceed 1 minute. Repeat the operation if necessary, then wash and wipe dry.
For stains on cosmetics, tea, and tobacco, apply hydrogen peroxide, leave it for two hours, then wash and dry.
For oil stains, use ethanol (alcohol), acetone, or lighter oil to wipe, then wash and dry. If the marble furniture is scorched by the cigarette butt, you should consider asking someone to repair it.
Of course, for slightly scratched marble countertops, special marble cleaners and care agents can be used, and those with severe wear can be wiped with steel wire balls, and then polished with an electric sander.