Step 4: Place the end of the trouser patch from the middle seam of trousers on the inner side of trousers hem (with white silk inside) and place neatly on trousers hem. Step 5: Use an iron (130C-160C) to press and iron sequentially from the end (without moving the iron), 15 seconds per section, the start and the end of trouser patch need to overlap 1~2cm.
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