Alpha Hpa Ltd. However, based on my research, Alpha Hpa Ltd is a UK-based company that specializes in the production of high-purity alumina (HPA) for use in various industries such as electronics, energy storage, and automotive. HPA is a critical material used in the production of LED lights, lithium-ion batteries, and other advanced technologies. Alpha Hpa Ltd aims to become a leading supplier of HPA globally by leveraging its proprietary technology and expertise in the field.