中空花键轴齿轮生产厂家硬度高韧性强变速箱齿轮轴振铭机械

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Pyramid improvised machinery ltd

Address:7th and 7th
Tel:13516390219

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13516390219

中空花键轴 齿轮生产厂家 硬度高韧性强 变速箱齿轮轴 振铭机械