How to identify quartz stone quartz stone quartz stone and quality of Beverly fish quartz (high resin quantity of quartz quartz stone countertops, quartz stone plates Kong, quartz granite) situation, but everyone called Quartz stone. How do we distinguish between these quartz it? Characteristics of quartz and quartz stone has the characteristic of Reason 1, do not spend scratch quartz stone quartz content up to 94% of its quartz crystal is a natural in hardness only to diamond in natural mineral quartz, the surface hardness of Ta Mok's hardness high 7.5, much larger than the kitchen knife used shovel and other weapon, it will not be scratched. Quartz stone _ Kai Sa Building Materials (certified) _ quartz provided by the Dongguan City Kai Sa Building Materials Co., Ltd. Dongguan Kai Sa Building Materials Co. (www.kaisa-stone.com) is Dongguan, sandstone leaders, over the years, the company is 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 Kai Sa Building Materials better future.