... Thickness: 12mm,15mm, 18mm,20mm,30mm Our engineered quartz countertop has passed stone quality supervision center Guangdong certificate, ... super market and interior decoration Advantage:1Nature beautyPerfectstone Quartz has an elegance and beauty only comparable with the ... diamond, sapphire and topaz) harder than quartz. This makes that Perfectstone Quartz is high resistant to scratches.Taking in ...