Capacitor pins are short and can be connected. It can be welded, but it is more expensive. Welding, also known as welding or welding, is a processing technology and connection method that two or more materials are heated, pressurized, or both are used to combine atoms between two workpieces. Welding is widely used, which can be used for both metals and nonmetals. In the welding process, the workpiece and solder melt to form a melting zone, and the molten pool cools and solidifies to form a connection between materials. In this process, pressure is usually needed.