Drill Collar in China

• Jiangsu Rontech Petroleum Technology Incorporated Company

  Address: NO. 21 East Xinyan Road,Shizhuang Business District,Jiangyin,Jiangsu Province,China Email is gu.hanson at gmail dot com, 214400 Jiangyin China China
  Phone Number: +86 15961654498
  

• Zhongyuan Special Steelco.,ltd

  Address: located in the city of Jiyuan, Henan province, 454685 Chengliu town,Jiyuan city China
  Phone Number: +86 03916099012