What is quartz stone quartz stone? Quartz no radiation, high hardness quartz materials, creating a quartz stone countertops scratch without spending (Mohs hardness 7); sewage is not stained (vacuum manufacturing dense nonporous.);. Hot is not bad (quartz material can be temperature 300 ℃); with not old (30 polishing process without maintenance); non-toxic and non-radiation (NSF certification Kai Sa quartz stone, including heavy metals, can be in direct contact with food). Quartz quartz stone quartz technology development process was invented by Italian Pericom creation, first start from the blocks, to the current third-generation sheet production line. Pericom quartz stone production equipment, a production line of investment 170 million yuan. It is understood that at present there are 14 production plants around the world, are Pericom devices. 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.