With the foil continuous bright annealing furnace semi-finished copper strip annealing, commonly used bell furnace furnace, pit furnace, finished copper belt annealing is commonly used in the pit furnace, are low temperature long annealing. Such equipment investment costs are relatively low, covers an area of smaller, suitable for homogeneous annealing, intermediate annealing. For the finished product requires a higher copper annealing, the general use of continuous annealing furnace, is a high