Yan Zhong Ren

Tong Petrotech Inc provides oil services. The company was in 2012 and is headquartered in Houston, NY.

Longyuan Hengtong Petroleum Technology Co., Ltd. engages in the research and development, and manufacture of oil drilling equipment. Its products include drilling rigs, downhole tools, coil tubing technology, clean fracturing fluid system, friction-reduced water system, gravel packing sand control technology, hydraulic jetting staged fracturing technology, tubing conveyed perforation, high efficiency gathering transportation corrosion inhibitor, and measuring and testing equipment. The company was founded on March 24, 2014 and is headquartered in Beijing, China.

Beijing Yilong Hengye Petroleum Engineering Technology Co., Ltd. engages in the provision of oil drilling services. Its business activities include pumpdown perforating, snubbing, coiled tubing, oil extraction, drilling engineering, workover treatment, measuring and testing, and oilfield chemical services. The company was founded on August 8, 2005 and is headquartered in Beijing, China.