Tranche Update on Beijing Chieftain Control Engineering Technology Co., Ltd.'s Equity Buyback Plan announced on February 8, 2021.

From February 8, 2021 to March 31, 2021, the company has repurchased 530,900 shares, representing 0.2% for CNY 4 million. With this, the company has completed the repurchase of 530,900 shares, representing 0.2% for CNY 4 million under the buyback announced on February 8, 2021.