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The machine is specialized in production of hi-grad alu door and windows, and it is suitable to connection of 90 angle structure of alu door and window. The mechamical inkage structure make corner assembling synchronous. The positioning is up-and-down adjustable, and suitable to process deferent section shape and side of profile. Left and right punching head feed synchronously to avoid deforming in corner-assembling procedule to make window
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