Quartz cabinet | Kai Sa Building Materials (certified) | Heyuan quartz provided by Dongguan Kai Sa Building Materials Limited. Building Materials Co., Ltd., Dongguan City, Kai Sa (www.kaisa-stone.com) is specialized in the "stone, precast concrete," the enterprise, the company of "honesty, hard service" concept, to provide you with the highest quality products and services . Welcome to inquire! Contact: Mr. Hu. Building Materials Co., Ltd., Dongguan City, Kai Sa Features 1), easy to scratch: quartz plate vibration through the vacuum compression molding extrusion, has reached the Mohs hardness of 6 to 7.5, (Austrian mineralogist Mohs (Frederich Mohs ) the creation of a table to identify the hardness of quartz, is internationally recognized hardness testing method, 10 is the highest hardness, diamond is 10) steel ball hard is unable to scratch, wear, quartz sand, is on the market any kind of countertop materials are incomparable advantages. Quartz crystal is second only to diamond in hardness nature of natural mineral quartz, the surface hardness of Ta Mok's hardness of 7.5, much larger than the everyday use of knives and other sharp spade, even with a sharp knife across the surface, but also will not leave marks. Up to 1300 degrees Celsius above its melting point, not because of exposure to high temperature caused by combustion, also with high temperature characteristics of the quartz content of other man-made stone unmatched.