2014The ZHONGGUOLONG Oil Services S.A was registered in Ecuador.
2014Longyuan
Hengtong Petroleum Technology Co. Ltd., a joint venture company formed
by Tong Oil ToolsCompany (China Stock Code 300164) and Beijing
YilongHengye, to further expand overseas business.
2013Texery Oil Technologies was registered in US and put into successful operation.
2013Yilong entered into the SiChuan, Northwest Bureau. Tarim Oilfield and Xinjiang Oilfield Market .
2012Yilong started overseas oilfield services in Kazakhstan and Myanmar, the Middle East, Africa.
2011Yilong entered into Yanchang, SinopecJianghan, Sinopec Nanyang and Sinopec East China.
2010Yilong entered into Sinopec Shengli, Jiangsu and PetroChina Changqing.