Polishing brick in use process may be due to improper use of the surface Seepage pollution Phenomenon, several common seepage pollution treatment method is as follows:
1, tea, fruit stains, coffee sauce vinegar, leather printing, and so on the stains using sodium hypochlorite diluent (bleach), when used for 20-30 minutes after a cloth rub-up some infiltration in the brick stain for a longer time, soaking time should be a few hours.
2, ink, antifouling wax mould forming mildew using sodium hypochlorite diluent (bleach).When used as long as bleach coated in a few minutes to wipe besmirch place.
3, cement, scale, scale, rusty spot using hydrochloric acid or phosphoric acid solution, wiped a few times more.