Conductive silver paste, carbon paste, dielectric insulating ink, and silver through-hole paste products are essential functional materials used membrane switches, flexible printed circuits (FPC), and RFID technologies. Conductive silver paste provides excellent electrical conductivity and is widely used for printing circuit traces and antennas on flexible substrates. Carbon paste offers a cost-effective conductive solution, often used in switch contacts or as a protective layer over silver traces to prevent migration. Dielectric insulating ink serves as an electrical insulator, used to separate and protect conductive layers, ensuring circuit integrity and reliability. Silver through-hole paste products enable vertical electrical connections between multiple layers in complex circuit designs, playing a critical role in multilayer FPCs and advanced RFID structures. Together, these materials support the performance, durability, and miniaturization of modern electronic components.