Electric soldering iron welding method in PCBA

In the case of small welding spot, the three-step method can also be used to complete the PCBA welding, and step bc and step de in the five-step method can be combined into one.
In the case of small welding spot, the three-step method can also be used to complete the PCBA welding, and step bc and step de in the five-step method can be combined into one.