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Altech Chemicals, 2018 Annual Report



High purity alumina, or 'HPA', is a high margin and highly demanded product critical to a number of high-tech applications, in particular HPA is critical for two fast-growing industries: LED lighting and lithium-ion batteries.

In the manufacture of LED lights, HPA is the non-substitutable ingredient essential for the production of synthetic sapphire substrates upon which LEDs (light emitting diodes) are formed; there is no substitute for HPA in the synthetic sapphire production process. Synthetic sapphire is also used to produce wafers used in semiconductors for the electronics industry and scratch-resistant sapphire glass used for wristwatch faces, optical windows and smartphone components.

Increasingly HPA is also being consumed in the manufacture of lithium-ion batteries, which are used in electric vehicles and various consumer goods applications. Lithium-ion battery manufacturers are using HPA as a coating for the plastic polymer anode/cathode separator sheets within the battery in order to reduce separator sheet shrinkage and combustibility.

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