AXT Inc (AXTI) is a developer and producer of compound and single element semiconductor substrates, also known as wafers. The dominant substrates used in producing semiconductor chips and other electronic circuits are made from silicon. It focuses on the design, development, manufacture, and distribution of high-performance compound semiconductor substrates and the sale of materials. The company delivers alternative or specialty materials in the form of substrates or wafers, including compound and single-element substrates. Its compound substrates combine indium with phosphorous or gallium with arsenic. Geographically firm has its business presence across the region of Europe, Japan, Taiwan, China, North America, and the Asia Pacific from which China derives its largest revenue to The company.