| 摘要 |
PROBLEM TO BE SOLVED: To restore the color tone of an original exterior wall material by restoring the coating surface of a ceramic exterior wall material without replacing an exterior wall material, and to contribute to environmental protection by decreasing the weight of industrial waste and restoring the coating surface without using water resources. SOLUTION: In the method of restoring the coating of the ceramic exterior wall material, the coating surface, in which coating is deteriorated, in the ceramic exterior wall material is polished by electric equipment, original coating is exposed and a coating agent is applied.
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