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292020-07
Group cooperation and business
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Shandong kerui petroleum technology co.,ltd.E-mail:gaolili@keruioil.com Tel.:+86-18054651698 (Ms.Gao) -
292020-07
Drilling and workover technology service business
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Shaanxi Ryan International Oil & Gas Engineering Technology Service Co., Ltd.E-mail:fenglei@keruioil.comTel.:+86-13772094610 (Mr.Feng) -
292020-07
Fracturing stimulation technology service business
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Sichuan Ruidu Petroleum Engineering Technology Co,. Ltd.E-mail:zhangchunxiang@keruioil.comTel.:+86-15288889000(Mr. Zhang) -
292020-07
Gas stimulation technology service business
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Shandong Ruihengxingyu Petroleum Technology Development Co,. Ltd.E-mail:zhangyong@keruioil.comTel.:+86-18054651038 (Mr. Zhang) -
292020-07
Preparation of exploration and development plan business
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Shandong Ruilin Energy Technology Co,. Ltd.E-mail:songdj@keruioil.comTel.:+86-18954035059 (Mr.Song)