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Altech Chemicals, Company Presentation

What is HPA?

• Sapphire gemstone

• Purified alumina (Al2O3)

• 99.99% (4N) purity or greater

• Smelter Grade Alumina (SGA) ~ 99.5% Bayer Process uses sodium hydroxide (NaOH)

• Sodium impurity is a problem for sapphire and lithium batteries

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