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Two Patents We Own for Our Products

1) The design of inverted cylinders as supporting legs which avoids the radial force on the piston extends the life-time of the cylinders. The patent number is ZL01249443.7
2) Embracing pile driving or top-pressing pile driving or both can be used in operation with only one machine. The patent number is ZL02139875.5

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  Changsha Tianwei Engineering Machinery Manufacturing Co., Ltd All rights reserved
  TEL:0731-13807314106,13308469513,13786130391 (Market) 3207812(Technology) 3207813(Aftermarket)
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