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Cold welder welds 0.5 copper and 0.4 stainless steel together

Cold welder welds 0.5 copper and 0.4 stainless steel together Real shots of various welding, stainless steel welding joints are white, no polishing treatment is required after welding, copper and stainless steel welding does not require any polishing treatment, the welding points are very beautiful!

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