Solder Paste is the form of solder that is used in association with infrared reflow machines during the PCB assembly process.Solder paste is used in PCB assembly as it provides significant advantages and its form enables the process to become a simple and easy process. The Solder Paste can be sued within large scale PCB assembly, or even within prototype production. In fact it is used in most forms of SMT assembly, proving an easy to use medium for the solder.