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Domestic advanced welding machine, automatic welding, automatic annealing, automatic welding band saw blades. Welding, tempering, band saw blades are one-time reset automatically. Butt weld flash rate steady good quality. The device uses hydraulic drive, welding workpiece clamping firm, high-speed PLC as the main control chip, with a strong anti-jamming, fast response, high control precision, high integration and so on.