In April 2024, China's first silicon carbide (SiC) welding machine NBC - 500SiC was launched. By April 2025, it had celebrated its first - anniversary of listing. As the first domestic heavy - industry professional welding machine based on advanced SiC technology, it marks a major breakthrough in the technological innovation of China's welding and cutting industry. The application of silicon carbide materials has enabled the welding machine to achieve a qualitative leap in performance, with advantages such as high - frequency, high - temperature, and high - pressure. It not only improves the inverter frequency, but also realizes high - power density, energy - efficiency, and stable welding and cutting operations, bringing a revolutionary change to the welding and cutting industry.