How to identify quartz stone quartz stone is good or bad four, the standard authentication of quartz as a standard quartz stone identification: 13, Brightness: use light meter to detect more than 60 degrees. 14, exterior appearance: perfectly clear not cloudy. Color uniformity. Flatness: within 3000㎜ ± 0.5 mm; thickness: 12 mm ± 0.5 mm quartz stone slab countertops, 15 mm ± 1 mm quartz stone slab construction, 20 mm ± 1.5 mm plate. A quartz process: raw material 2, mixing: first to scale the deployment of good resin, coupling agents, curing agents and pigment mixed in a dedicated mixing bucket for 2 minutes stirring. While weighed quartz sand, pour a small amount of glass with the machine automatically stir, then add the stirred resin, curing agents and colorants, perform the stirring Jun uniform, in about 7 minutes. Quartz stone, quartz stone, Kai Sa Building Materials (certified merchants) are provided by Kai Sa Building Materials Co., Ltd., Dongguan City. Dongguan Kai Sa Building Materials Co. (www.kaisa-stone.com) is specialized in "stone, precast concrete," the business, the company adhering to the "honesty, hard service" concept, to provide you with the highest quality products and services . Welcome to inquire! Contact: Mr. Hu.