Tangshan Yulian Mechanical & Electrical Co., Ltd.

+86 13803318160

tsylliu@163.com

  • CNC screw milling
    CNC screw milling
  • CNC screw polishing equipment
    CNC screw polishing equipment
  • Ground drive unit test stand
    Ground drive unit test stand
  • Downhole screw pump test bed
    Downhole screw pump test bed