Refractories or refractory materials are resistant to high temperatures which are used in making mold or crucibles. They are produced from natural and synthetic materials, generally non-metallic, or combinations of compounds and minerals. These materials must be chemically and physically stable at high temperatures. We, Sinocean Industrial Limited , the most professional supplier and exporter of welding grade refractory bauxite, HFST bauxite, porcelain insulator bauxite, cement grade bauxite, and refractory grade bauxite. If you have the demand of refractory material, welcome to contact us for more details.