Instructions: 1. When used, in order to obtain a good welding effect, the weldment must be solderable, the surface of the metal should be welded Keep clean, use the appropriate lead-free tip. 2. After opening the tip, the soldering iron temperature is raised to the required operating temperature before welding. 3. The operator's head should be away from the pad 20CM to avoid being burned. 4. When the soldering iron is not used, place a layer of tin on the soldering iron and turn off the power. 5. The operating area should be fitted with the appropriate air purifier.