Grinding Media and Bauxite Lumps Manufacturer | M/S ... Established in the year 2017, M/S Oriental Zirconia is the leading Manufacturer, Wholesaler, Retailer, Importer and Exporter of Sillimanite Sand, Bauxite Lumps, China Clay Lumps, Garnet Sand and many more.These products are manufactured from high quality material that is procured from well-known vendors.