The development of low-orbit satellites has attracted attention from all walks of life in recent years under the development of resources injected by international science and technology companies. Large-scale satellite galaxies, unlike past satellite communication systems, can provide broadband transmission and global connectivity services.

A welding method that uses the flame generated by the mixed combustion of combustible gas and combustion-supporting gas as the heat source to melt the weldment and the welding material to achieve interatomic bonding.