Recently, AXT Inc in the US stock market has emerged as a new "dark horse" with a cumulative increase of over 135%. The company's fourth-quarter earnings report for 2023 exceeded expectations, and CEO Morris Young expressed optimism about the development of indium phosphide in the AI field. He believes that indium phosphide, as the best platform for fast data transmission, will see growing demand. The application of indium phosphide in the AI field has driven up the demand for 6-inch indium phosphide wafers. Meanwhile, optical modules are the largest downstream application area for indium phosphide substrates, widely used in the manufacture of optical module devices. Under the new opportunities for the development of the metal materials industry chain, indium phosphide is expected to experience vigorous growth.