Core Viewpoint - The company, Huadian Co., emphasizes its core technological capabilities to develop and customize high-performance, high-reliability PCBs in response to evolving customer demands [2] Group 1: Product Development - The company specializes in complex PCB products with 32 layers or more, designed for stringent data communication applications [2] - These products are primarily used in 800G and 1.6T high-speed network switches, routers, custom ASIC accelerator boards, and semiconductor simulation and verification systems [2] Group 2: Material and Design - The PCBs utilize ultra-low loss materials (such as M8 and above) to ensure high-frequency signal integrity [2] - Some products feature highly complex structural designs, including multiple pressings (such as N+N or N+M structures) and HDI technology [2] - HDI design incorporates microvias (tiny holes created by laser drilling for layer interconnection) and blind vias (which pass through multiple layers without connecting to all) [2] Group 3: Performance Standards - These PCBs are characterized by high aspect ratios and must meet stringent standards for signal integrity, power integrity, and overall reliability [2]