PHP-5F-GK is a through-hole conductive silver paste which is single-component formula thermosetting electronic functional materials , especially developed for double PCB ,it can connect two layers circuits through plugged via silver and form the electrical circuits, PHP-5F-GK has good fluidity and printability, and the formation of film on the PCB substrate after thermal curing ,can achieve excellent adhesion and good electrical and thermal conductivity, and can improve the PCB reliability.