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| Wholly Owned Subsidiaries |
| Jiangsu Shuguang Drilling Tool Co., Ltd. |
| Jiangsu Shuguang Bellows Co., Ltd. |
| Jiangsu Shuguang Pressure Vessel Co., Ltd. |
| JiangsuShuguangTool Co., Ltd. |
| Jiangsu Shuguang New Power co.,ltd |
| Holding Companies |
| Shuguang Huayang Drilling Tool Co., Ltd. |
| Shuguang Shengkai Drilling Tool Co., Ltd. |
| Jiangsu Shuguang Oil Tools Co., Ltd. |
| Sharing Companies |
| Jiangsu Tube-Cote Shuguang Coating Co., Ltd. |
| Jiangsu Stowell Shuguang Power Co., Ltd. |
| Shuguang Hexin Petroleum Machinery Co., Ltd. |
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