女同互添下身视频在线观看

<code id="6vhdd"><rp id="6vhdd"></rp></code>

    <track id="6vhdd"><ruby id="6vhdd"><tt id="6vhdd"></tt></ruby></track>

    1. TOP
      UTM Builder
      English
      +86-755-29927485 sales@haimingrun.com
      News
      New Released-Premium High Wear Resistance PDC Cutters - S20 Series

      New Released-Premium High Wear Resistance PDC Cutters - S20 Series

      2020-09-29

      New Released-Premium High Wear Resistance PDC Cutters - S20 Series

      S20 series are the high wear resistance cutters which designed for drilling super hard and high abrasive formations.  It is the upgraded version of the highest wear resistance cutter S18, the wear resistance of S20 is close to S18 and impact resistance is improved 30% than S18, the wear resistance, impact resistance and self-sharpness is well balanced.  The scientific management of residual stress helps to reduce "Spall".

      S20 Series News-2.jpg

      女同互添下身视频在线观看