Quartz Process II: molding 5, pressing: cloth after completion through automated production line conveyor into the press of, for about 120 seconds vacuuming operation quartz stone structure, after completion and then a second vacuum pressure, the secondary pressure time is usually about 25 seconds. How to identify quartz stone quartz stone quality of four, standard identification of quartz and levy on international standards in this area is still used by the US ASTM standards. According to foreign testing situation quartz stone, quartz stone we listed the following number of technical indicators Kai Kai Sa Sa quartz _ _ quartz stone building materials provided by the Dongguan City Kai Sa Building Materials Co., Ltd. Dongguan Kai Sa Building Materials Co. (www.kaisa-stone.com) quality of service and products, continue to receive the recognition and trust of new and old customers and the industry. Our company is a certified member of the whole alliance network operators, business alliance customer service icon on the page, you can talk directly with our customer service staff, to our future cooperation happy!