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新款纹 数控刀杆 SER3232P16 SEL3232P16 SER4040R16
螺纹刀SER/SEL1212H16/1616H16/2020K16/2525M16/3232P16/4040R16
三韩数控外螺纹车刀杆SER L3232P16 4040R16外牙拔丝车床厂家直销