My company has access issued by the American petroleum institute API certificate
Henan Tongzheng Industrial Limited Liability Company is a private joint – stock enterprise. Located in Jiulong Industrial Park of Zhengzhou City in Henan Province, Henan Tongzheng Industrial Limited Liability Company is just at the junction of the Longhai (Jiangsu – Gansu) railway and the Beijing - Guangzhou railway lines and adjacent to the Lianhuo (Jiangsu - Xinjiang) Expressway and Beijing – Zhuhai Expressway, thus tt boasts superior geographic location and convenient transportation. The company, founded in the year of 2007 with an investment more than 9,800 million yuan and covering an area of more than 100 mu (a unit of land area equal to 0.16 acres), specializes in the development and manufacture of the well drilling and oil extraction equipments as well as the metering devices.Our company mainly produces blowout preventer, choke manifold, More