可根据需求，进行熏蒸处理。
May act according to the demand, carries on fumigation processing.
入孔与进料口的大小和相对位置，可根据需求改变。
Both size and related position of the manhole and the feeding port are variable upon necessity.
我们生产的拉伸弹簧有机械环，交叉环，拉伸环，边环，也可根据需求定做端口。
We produce: Extension springs with machine loops, crossover loops, extended loops, side loops, or special ends if required.
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