The appearance of the stone looks very hard, seems to be a wear-resistant and corrosion-resistant building materials. However, due to the natural stone itself, cracks and pores with adsorption and permeability, which became the aging of the stone and the root causes of various diseases. And marble is composed of calcium, granite is composed of silicate minerals, so easy to react with some chemical substances. The protection of natural stone like to protect our body, if not pay attention to maintenance or maintenance methods are not correct, will make the stone natural noble, elegant temperament style gone.
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