1, building materials: tile, flooring, composite panels, flash strips, mushroom, water boards, chaos-shaped plates, mosaic, etc. 2, plate series: dinner plates, trays, candle holders, coasters three colors: black, cyan , green, gray-green, black and gray, rusty 4, use: public places, parties, restaurant, home, gifts, gifts, etc. 5, General Specifications: 20 * 30cm, 20 * 40cm, 25 * 50cm, 30 * 40cm, 25 * 40cm 6, coasters, trays thickness: 5-7mm, ordinary flat thickness: 1-3cm 7, quartzite chemical composition (%): SiO2 (46.5-56.4), Al2O3 (16.0-25.0), Fe2O3 (5.4 -8.4), TiO2 (0.7-1.9), MnO (0.0-0.1), MgO (2.6-3.8), CaO (1.6-4.2), K2O (2.8-6.5), Na2O (0.5-1.5%), organic matter 0.68 Loss on ignition 3.46 quartzite physical properties: compressive strength of 1229kg / cm2, flexural strength 365kg / cm2, wear 1.14g / cm2, 90 gloss, water absorption 0.04%, acid rate 98.52%, Shore hardness 63, bulk density 2.71T / m3, less than 10 gamma radiation intensity at 1220 ℃ calcined particle density 0.4-0.8g / cm3. Vitamin D3 www.bjkyzy.com natural culture stone www.yixuanshicai.com