Ya well it has 10 subsidiary companies and 4 divisions: Sino- America Highland Shengli Company, Hui Sen Machinery Company, Drilling Pipe Company, Pump Company, Continuous Sucker Rod Company, PVC Pipe Company, Chemical Company, Machinery Engineering Company, Petroleum Engineering Company and Trade Company, Drilling Rig division, Tubing Division, Sucker Rod Division and Automobile Repairing Division~~~~
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