How is HPA used?
- The largest consumption of HPA by volume today is in the manufacture of synthetic sapphire, a super-hard material used as a substrate in LED and semi-conductor production. There is no known substitute for HPA in the production of artificial sapphire.
- Demand for 4N HPA for LED production continues to grow as LEDs are more widely applied.
- Demand for 5N+ HPA for sapphire glass production is growing rapidly as this becomes the material of choice in display screens for portable electronic devices such as cell phones and smartwatches.