What should I do if the cement ash is not wiped clean on the bathroom floor tiles?

It can only be removed by mechanical methods, and the plastic plate can be scraped with a steel wool brush for cleaning, and be careful about the glazed ceramic tile!

The instructions are made of recycled board recyclate material, which is of poor quality. It has already begun to age. What is not cleaned is the discoloration and oxidation of the material itself, some of which are black and some are yellow. The material itself does not have the function of yellowing and stain resistance. >>>More

There is no professional detergent that reacts with cement can be used, first scrape off the thicker ones with a putty knife, and then wash them with dilute hydrochloric acid. You can dilute the hydrochloric acid first, wear rubber gloves on your hands, dip a rag in dilute hydrochloric acid, and repeatedly wipe the floor tiles with cement blocks, and the larger cement blocks can be gently broken with a hammer and then wiped with dilute hydrochloric acid. Be careful not to get too much hydrochloric acid to prevent too much hydrochloric acid from corroding the cement in the joints.

Workaround:

1. [Red ink stains]. >>>More

Brush it with a wire brush for rust removal first, and then use an angle grinder to install a coarse cloth wheel for polishing. >>>More