Specialized welding equipment other than arc welders, TIG welders, MIG/MAG welders, spot welders, and plasma welders. Dedicated welding equipment including laser welders, electron beam welders, ultrasonic welders, friction stir welders, resistance welders, gas welders, submerged arc welders, and electroslag welders. High-performance welding equipment for special welding processes such as precision micro-welding of components, dissimilar metal joining, automated welding of large structures, and fusion bonding of resin materials.