三安光电：主营的LED外延芯片业务及射频前端、电力电子、光技术等集成电路业务均处于行业领先水平

Group 1 - The company, Sanan Optoelectronics, focuses on the core business of compound semiconductors and is engaged in various sectors including LED epitaxial chips, RF front-end, power electronics, and optical technology [1] - The company's main businesses are reported to be at the leading level within the industry [1]