Solder wire is available in rosin flux core & solid wire without flux. It's suitable for both manual soldering & automatic soldering projects. Also suitable for DIY hobbyist or repairing work.

Solder Bar is suitable for PCBA and electronics assembly through wave soldering machine or dip soldering. It enhances the production capacity of assembly.

For mass production of radiator assembly, using solder bar and assembled by dip soldering is good option. For repairing work, solder wire will be more suitable.

Solder paste is suitable for SMT (surface mount technology) project. Especially for high precision and small components, using solder paste is the smartest solution.