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Room 518, Changcheng Building A, No.22 Shijingshan Road,Shijingshan DistrictBejing, BeijingChina, 100043Web Page Link: https://www.toboc.com/hlmwd.aspxD&B D-U-N-S Number: 101990496
The positive pulse system with minimum moving parts extends downhole life, simplifies maintenance and offers low resistance to flow ranges from 10 to 55l/s.
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Beijing Hailan Science & Technology Development Co., Ltd.