Dongying Tianrui Petroleum Science & Technology Co., Ltd. establihed in November 2003, located in Dongying economic rdevelopment zone, is a item of attracting investment.

We have enough equipments, such as large pipe threading lathe, numerically controlled fraise machine, engine lathe, miller, boring lathe, sawing machine, Mechanical disassembling equipment and ultrasonic fault detector and so on, to manufacturing products of high qulity. Our fixed assets adds up to more than 29000000 RMB and working fund is totally 10000000 RMB. We are resourced enough to gurantee our products of high qulity.

Years gone, we have been concetrating our leading thought on the words " customers are our God" and " qulity is our main vein of our economy"

In June 2008 we get honoured the APIQR and in Feb 2011, our products are identified by API, covering 5CT/7-1.