Jian Tong Liu

Oil & Gas Engineering Co., Ltd. engages in the manufacture, sale of oil and gas drilling equipment. It also engages in oil and gas construction project work. The company was founded on October 18, 2006 and is headquartered in Suzhou, China.

Part of Suzhou Douson Drilling & Production Equipment Co., Ltd., Suzhou Douson Valve Co., Ltd. develops, manufactures and sells industrial valves. The company is based in Suzhou, China. The Chinese company was founded in 2007. The CEO is Shu Lin Li.

Part of Suzhou Douson Drilling & Production Equipment Co., Ltd., Suzhou Baoforging Co., Ltd. is a Sino- joint venture forging company specializing in large and medium-sized forgings. The company is based in Suzhou, China and covers an area of 35,351 square meters with a plant area of 1,4797.5 square meters. The Chinese company has various equipment including free forging electric hammers, natural gas heating furnaces, and common machine tools such as cars, milling machines, and drilling machines. The company also has introduced advanced technology from the United States for their production line.

Jiangsu Douson Investment Co. Ltd. is a Chinese company that provides investment services. The company is based in Suzhou City, China. The company was founded in 2009.

Baoye Machinery, Inc. manufactures machinery. The company is based in Houston, TX.