What is quartz stone quartz stone? Quartz no radiation, high hardness quartz structure, 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 radiation (NSF certification quartz stone countertops, including heavy metals, can be in direct contact with food). Why develop quartz quartz? 5, quartz: have other decorative materials can not match wear, pressure, temperature, corrosion-resistant, anti-penetration properties. The combination of rich colors and textures to make it beautiful natural stone surface gloss. Quartz countertops have incomparable superiority of other materials, Kai Kai Sa Sa quartz _ 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.