The use of rare earth ball size pulley ink iron casting, both for the convenience of processing, but also so that the performance of steel pulley with good intensity.
大小皮带轮采用稀土球墨铁铸造，既方便加工，又使皮带轮具有钢的性能强度好。
The use of rare earth ball size pulley ink iron casting, both for the convenience of processing, but also so that the performance of steel pulley with good intensity.
大小皮带轮采用稀土球墨铁铸造，既方便加工，又使皮带轮具有钢的性能强度好。
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