Different stains will require different approaches. Let's go down the list of the most common ones.
1.Tea, coffee, beer, ice-cream, grease and other pollutants
Method: Clean the ceramic tiles with sodium hydroxide or potassium bicarbonate.
2. Ink, cement and other pollutants,
Method: Clean the ceramic tiles with hydrochloric acid, nitric acid and other dilute.
3. Paint, and other pollutants,
Method: Clean the ceramic tiles with the special cleaning agents.
