[Class : 1] Mineral Sands, Industrial, Minerals, Sands, Opacifiers, Chemical Products For Use As Opacifiers, Refractory Materials, Chemical Products For Use In Production Of Refractory Materials, Composition For Use In The Manufacturer Of Refaractory Materials, Chemical Used In Industry, Science, Photography, Agriculture, Horticulture And Forestry; Unprocessed Artificial Re...