Confluence article surface plating Tin layer should flat, and light, and uniform, not allows has dew copper, and off Tin, and spots, and rust, phenomenon, welding Shi smooth, and no Burr, and no virtual welding, phenomenon; welding with beyond Confluence article 1mm within, confluence with beyond welding with part: 10 ± 1mm, welding spot size: 6-10MM; Confluence article placed direction, confluence with shall not has any twisted
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