How to identify quartz stone quartz stone quality of four, standard identification of quartz and levy on international standards in this area is still used by the US ASTM standards. According to foreign quartz stone quartz stone test case in Dongguan, our quartz lists some of the technical indicators are artificial quartz stone quartz stone procurement knowledge chap market conditions and trends, notably Spain, Sally Stone vigorously promoted in China, to It introduces a new concept of consumption and lifestyle. In the next three years quartz stone products will be 500% annual rate of increase, with a huge market space. Quartz uses _ _ quartz Kai Sa Building Materials provided by the Dongguan City Kai Sa Building Materials Co., Ltd. Dongguan Kai Sa Building Materials Co. (www.kaisa-stone.com) quality of service and products, continue to receive the recognition and trust of new and old customers and the industry. Our company is a certified member of the whole alliance network operators, business alliance customer service icon on the page, you can talk directly with our customer service staff, to our future cooperation happy!