Tranche Update on NanJing Research Institute of Surveying, Mapping & Geotechnical Investigation, Co.Ltd's Equity Buyback Plan announced on May 23, 2023.

From January 1, 2024 to March 31, 2024, the company has repurchased 1,289,600 shares, representing 0.89% for CNY 12.82 million. With this, the company has completed the repurchase of 3,383,594 shares, representing 2.32% for CNY 47.23 million under the buyback announced on May 23, 2023.