... of the leading China largest size quartz stone for kitchens manufacturers and suppliers,Website:http://www.bittoquartzstone.com, Bitto Industry ... . 3.Colors of Bitto Bitto largest size quartz stone for kitchens Different color are available , we provide customized service . ... and loading information of Bitto largest size quartz stone for kitchens 12mm: 29kg/ sqm, 15mm: 36kg/sqm, 20mm: 48kg/sqm ...