During the use of vitrified bricks, surface contamination may occur due to improper use. Several treatment methods for common infiltration are as follows: First, cement, scale, water rust, rust spots using hydrochloric acid or phosphoric acid solution, rub more times. Second, the glue hammer printing decontamination method: first use 20%-40% sodium hydroxide (NaOH) solution after soaking for 24 hours, wipe with a cloth, and then use 30%-50% hydrochloric acid (Hcl) solution After soaking for 30 minutes, wipe it off with a cloth. Third, the lime scale with an acidic cleaner. Fourth, alkaline cleaner for ice cream. 5, ink, anti-fouling wax mold formation of mildew using sodium hypochlorite dilution (bleach). When using, just apply bleach to the stain and soak it for a few minutes. 6. Paint, oil stain, oily marker, surface anti-fouling wax layer Use alkaline cleaner or organic solvent (acetone, triethylene) to remove paint and remove oil. 7. Tea stains, fruit stains, coffee sauce vinegar, leather shoes and other stains use sodium hypochlorite dilution (bleach), soak for 20-30 minutes after use, wipe with a cloth; some stains that penetrate into the brick for a long time, soaking time It takes a few hours.
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