Digital technology gives a high degree of design freedom, greatly improves production efficiency through metal 3D printing technology, and is widely used in hydrogen energy reactors and radiators. Metal 3D printing technology can meet different degrees of customized production, improve production efficiency, ensure stable performance and quality, and shorten the production and delivery cycle. at the same time, it has realized subversive innovation in parts weight reduction, volume reduction, performance improvement, efficiency improvement and so on.