From the introduction of Germany TRUMPF laser welding machine. Welding work conditions require low, under normal welding without evacuated. Laser welding machine welding combined with computer technology to achieve precise control of process parameters, the welding process is completely automated, to achieve full control of the welding process. By the focused laser beam spot small, high heating power density range, narrow weld and heat affected zone, good joint performance; small welding deformation and residual stress. Welding speed, efficiency, environmental protection, the annual production of composite tape handsaw maximum load of 360 tons, if the production of composite tape band saw maximum load of 1260 tons.