Product is a mixture of white clay, kaolin scientific name, belonging to non-metallic minerals, the main chemical ingredient is about: SiO2Al2O3Fe2O3. Vero ball clay, commonly known as white clay, formerly known as kaolin, also known as refractory clay. Vero ball clay is a clay mineral quality on the domestic and the world, uses a very wide range, metallurgy, light industry, chemical industry, feeding mouth stemming, the main raw material ceramics. Plastics, rubber, paint, household chemicals auxiliary or functional material, also used in the production of aluminum sulfate, aluminum chloride, silica white carbon black. Second, the physical and chemical indicators index content% SiO2: 49.0; Al2O3: 30-33; Fe2O3: ≤1.2; CaO: 0.01; MgO: 0.78; TiO2: 0.6; Na2O: 0.19; K2O: 0.12; LOI: 11.37; refractoriness: ≥1700 ℃ plasticity index: ≥30; Whiteness: 50-70; fineness: 200-300 mesh.