Quartz synthetic quartz material does not contain any heavy metal impurities may lead to radiation, 94% of quartz crystals and other additives make us green quartz completely non-toxic, no radiation pollution, ease of use. Texture and beautiful quartz surface gloss combination of rich colors make it a natural quartz stone How to identify good or bad one, relatively Beverly quartz and quartz stone two other domestic appearance: A, Beverly Long quartz stone : clear, bright color, no film B, other domestic quartz: cloudy, hazy color, needs covered. 3, raw materials: A, Beverly Long Quartz: 94% of the material is quartz (silica content of more than 99.9% quartz plate, the melting point of up to 1300 degrees Celsius), 6% for resin and traces of paint. Section sharp, reflective of good B, other domestic quartz: quartz sand content is low quartz stone countertops, up to 80%, high resin content (over 20%), which added a lot of calcium, so do not scratch. Quartz structure _ Kai Sa Building Materials (certified) _ quartz provided by Dongguan Kai Sa Building Materials Limited. 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.