Group 1 - The company, Chongda Technology, has demonstrated strong capabilities in high-layer PCB technology for AI servers and maintains good cooperation with international clients such as Amphenol [1][3] - The company focuses on the high-end market to enhance its core competitiveness [1] - Chongda Technology's AI server PCBs have passed NVIDIA's GB300 architecture certification, with flagship products like 70-layer high multilayer boards and 800G optical module PCBs breaking overseas monopolies, achieving a single board value 5-8 times that of traditional products [3] Group 2 - The company does not supply NVIDIA directly but instead supplies communication backplane PCBs indirectly through secondary suppliers like Amphenol, marking an important step towards becoming a leader in the PCB industry [3]