Core Insights - The company disclosed an investor relations activity record highlighting the capabilities of HDI as a platform technology for high-density wiring in PCB boards [1] - The company's PCB business possesses HDI process capabilities, primarily applied in mid-to-high-end products across various downstream sectors including communication, data centers, industrial control medical, and automotive electronics [1] Summary by Categories Technology - HDI is identified as a platform technology that enables high-density wiring for PCB boards [1] Business Application - The company's PCB business utilizes HDI technology in several mid-to-high-end products [1] - Key downstream sectors for the application of HDI technology include communication, data centers, industrial control medical, and automotive electronics [1]