丰满迷人的少妇特级毛片,国产精品久久久久电影网,亚洲国产成人精品综合AV

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      Contacts:Mr Zheng
      Phone:13777773338
      Tel:025-56822888
      Fax:025-56822887
      Address:No.108 Fengshan Road, economic development zone, Gaochun District, Nanjing, China
      Website:www.spudrun.net
      Precision ball screw

      Product description...


      Product details

      型號規格的編號及其含意

      導程精度(誤差允許值)
      滾珠絲杠副根據用途分類的精度級例
      內循環滾珠絲杠副
      螺紋長度300mm及旋轉1周的變動值(允許值)

      丰满迷人的少妇特级毛片,国产精品久久久久电影网,亚洲国产成人精品综合AV