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What about Hailong Petroleum Technology Service Co., Ltd.?

Hilong Petroleum is a private oil enterprise. With Beijing and Shanghai as the center, many of its professional production enterprises have established production bases in Jiangsu, Tianjin, Shandong, Shanxi, Shaanxi, Northeast China and Sichuan. At the same time, overseas business involves America, Middle East, Russia, North Africa and parts of Europe.