Sinopec Oilfield Service maintains substantial external guarantees

As of September 30, 2025, Sinopec Oilfield Service Corporation reported actual external guarantees totaling 18.85 bn yuan for its wholly-owned subsidiaries and joint ventures, representing 21.8% of the company's latest audited net assets. The cumulative guarantee balance reached 280.59 bn yuan. All actual guarantee amounts were within the limits approved by the company's shareholders.

The guarantees primarily support credit lines and performance obligations for its wholly-owned subsidiaries, including Sinopec Shengli Petroleum Engineering Co., Sinopec Zhongyuan Petroleum Engineering Co., and Sinopec Petroleum Engineering Construction Co. Credit guarantees for wholly-owned subsidiaries amounted to approximately 181.65 bn yuan, while performance guarantees totaled 79.4 bn yuan.

Additionally, Sinopec Oilfield Service provided performance guarantees of $2.75 bn for its joint venture, Mexico DS Company, which is involved in oilfield exploration and development. The company stated that these guarantees are essential for facilitating business operations, particularly international ventures, and for expanding its market presence in Mexico. No overdue external guarantees were reported.