Tranche Update on Hangzhou Huaguang Advanced Welding Materials Co.,Ltd.'s Equity Buyback Plan announced on May 10, 2022.

From May 10, 2022 to June 30, 2022, the company has repurchased 930,000 shares, representing 1.06% for CNY 14.61 million. With this, the company has completed the repurchase of 930,000 shares, representing 1.06% for CNY 14.61 million under the buyback announced on May 10, 2022.