1. Make electrostatic tape before welding to ensure the effectiveness of wrist strap.
2. Adjust the desk and chair of the working chair to the height suitable for you. Sit upright in your seat, put your legs under the table, and don't lean on the seat.
3. Before or during welding, clean the solder residue in the welding head at any time. When there is a lot of tin slag in the welding head, tap it gently with a small tin slag box.
4. When welding, don't press the soldering iron hard, otherwise it will damage the PCB pad and welding head.
5. The temperature of soldering iron is controlled at about 360 degrees.