The use of polished tiles in the process may be due to the use of improper surface contamination caused by the phenomenon of common seepage of several treatment methods are as follows:
1, tea stains, fruit stains, coffee sauce, vinegar, leather shoes and other stains use sodium hypochlorite dilution (bleaching agent), use soak for 20-30 minutes after the use of cloth to wipe; some seepage into the brick for a long time stains, soaking time It takes a few hours.
2. The mildew formed by the ink and the anti-fouling wax mold is diluted with sodium hypochlorite (bleaching agent). When used, simply wipe the bleach for a few minutes by applying it to the stain.
3, cement, scale, rust, rust using hydrochloric acid or phosphoric acid solution, rub several times.
cement
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