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[Name of Door and Window Manufacturer] A certain aluminum alloy door and window manufacturer faced development bottlenecks due to the drawbacks of traditional argon arc welding: long welder training, low efficiency of 1 hour per frame, time-consuming weld mark grinding, and a high 12% defect rate (cold welds, loose welds), which increased rework costs.After introducing [Brand] arc welding machines, the company was able to train ordinary workers in 3-5 days. Welding time for door and window frames of the same specification was reduced to 30 minutes, nearly doubling efficiency. Although the heat-affected zone was slightly larger, the use of specialized welding wire and optimized pulse mode required only simple corrections, reducing grinding time by 60%.In terms of quality, weld penetration was uniform, and the defect rate was reduced to below 4%. Production capacity increased from 800 sets/month to 1,300 sets, and delivery time was reduced from 15 days to 10 days. On the cost side, training costs were reduced by 40%, profile loss was reduced by 20%, and overall costs were reduced by 15%. The company has leveraged this to expand its business to surrounding provinces.