Laser welding is not the same as laser marking or cutting. Its biggest feature is customization. Laser marking and laser cutting can produce large-scale and batch products, but welding can hardly do this because each customer's needs are very different, making laser welding difficult to mass-produce. However, with the advent of Internet and personalized requirements, the growth of small and medium-sized system integrators and automation companies has increased geometrically, and more and more applications for laser welding have been demanded. This situation will change in nature.