1. The precision of the fixture requires the use of fixtures during welding to ensure the position of each hole. If the fixture is not precise, resulting in an unqualified frame angle, it not only cannot be installed during installation, but also affects the uneven height of the front and rear forks of the electric vehicle. Therefore, the precision of the fixture is very important.

2. The welding technique of a welding master determines the welding quality and also the driving safety of a cyclist. Generally, a welding master must have 3-5 years of welding experience to ensure the stability of the welded frame.

3. The welding wire and electrode used for welding also determine the quality of welding. If both the welding wire and electrode are used poorly, the welding effect will not be good. Every step, every process, cannot tolerate any carelessness, and the quality of the overhead electric vehicle frame is made in this way.