利用限位装置成功解决反拉深起皱问题，保证了零件质量。
Position limit device is employed to solve the problem of corrugation by reverse-drawing so that quality of the part can be ensured.
利用限位装置成功解决反拉深起皱问题，保证了零件质量。
Position limit device is employed to solve the problem of corrugation by reverse-drawing so that quality of the part can be ensured.
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