Quartz stone 1,Slab size: 3250*1650mm,3050*1450mm;3000*1200mm 2,Thickness: 12mm,15mm,18mm,20mm,30mm Our engineered quartz countertop has passed stone quality supervision center Guangdong certificate, complying with the radioactivity protection A. We also obtain ISO 9001 quality system certification. Our market is covering the United States, Middle East, Asia, Europe so on.Our engineered quartz ...