1 - Set the Soldering iron to temperature of 400℃., 2 - On the wet sponge, wipe the tip of the Soldering iron., 3 - Loose apart the leads of the LED light then insert it to the hole of PCB., 4 - Directly melt a little Solder on the tip of Soldering iron., 5 - Evenly wipe again the tip of the Soldering iron on the sponge., 6 - Rapidly touch the Soldering iron onto the joint of the LED light for 3 seconds., 7 - Input a small amount of solder onto the joint., 8 - Now remove the solder, then the soldering iron, while keeping the joint in position., 9 - Get the PCB and inspect the joint closely. It should look shiny and clean.,

Arrange the following steps in Soldering, 1 as first step and 9 as the last step.

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