Rubamin Limited offers Calcined Grade Zinc Oxide. Rubamin Limited is an ISO 9001: 2008 certified company supplying a wide range of non-ferrous metals such as Copper, Cobalt, Nickel, Molybdenum, Manganese, Vanadium and Tungsten. The Calcined Grade Zinc Oxide, available under the brand name "Yellow Seal" is made from Calcining Zinc Hydroxide and provides very low heavy metal content. The Calcined Grade Zinc Oxide contains 99% of pure Zinc Oxide and is extensively used in the tyre, rubber and ceramic industry.
