Characteristics of quartz and quartz stone with the characteristics of the reasons for a scraping do not spend their quartz stone quartz content of up to 94% quartz, quartz is the nature of natural mineral hardness only to diamond, the surface hardness of high hardness dipyridamole 7.5, much larger than the kitchen knife used in the shovel and other weapon, it will not be scratched. Quartz How to identify good and bad sections of quartz sleek, cloudy, impatient corrosion, reflective bad. Or join granite, marble. Granite, marble and quartz particles are not the same particles of quartz particles were crystalline quartz structure, thorough Kai Sa quartz with crystal texture. The granite, marble particles cloudy quartz countertops, opaque, low hardness, granite surface Mohs hardness is only 4-5, marble only 2-3. So do not cause other domestic scratch quartz, so they are used in the factory coating approach quartz stone _ Kai Sa Building Materials (certified) _ quartz provided by Kai Sa Building Materials Co., Ltd., Dongguan City. Building Materials Co., Ltd., Dongguan City, Kai Sa (www.kaisa-stone.com) is Dongguan, sandstone leaders, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Kai Sa leader in building materials with the staff warmly welcome all inquiries negotiations to create building materials Kai Sa a better future.