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          • 1/31/2018 Wednesday 中文版 English русский Tel:(010)82608424,25,26
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            China Oil & Technology Investments International Ltd (Hongkong)
            Xi'an landmark Oil Tech Co., Ltd.
            Liaoning Austrian friends Energy Technology Co., Ltd.
            Wuhan Research and Development Center
            Zhanjiang Service Center
            Shanghai Service Center
            Tianjin Service Center
            Xinjiang Service Center
            Shengli petroleum equipment manufacturing center
            In the project headquarters
            Sino-Oil Sunshine(Beijing)Sci & Tech Co.,Ltd
            • China Oil & Technology Investments International Ltd (Hongkong)
            • Xi'an landmark Oil Tech Co., Ltd.
            • Liaoning Austrian friends Energy Technology Co., Ltd.
            • Wuhan Research and Development Center
            • Zhanjiang Service Center
            • Shanghai Service Center
            • Tianjin Service Center
            • Xinjiang Service Center
            • Shengli petroleum equipment manufacturing center
            • In the project headquarters