喷漆枪和枪嘴也必须是全新的。
更换割枪枪嘴、位移穿孔、移动零件功能。
Functions of cutting gun nozzle replacement, displacement punching and removable parts.
由此可克服冲压较厚枪嘴的困难度，可延长冲压模具的寿命。
Thus the difficulty of punching the thick gun nozzles is overcome, and the service life of a punching mold can be prolonged.
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