Clean and environmentally friendly: The security code will be changed to CleanTech on November 26, 2025.

Announcement on Cleanliness and Environmental Protection: The company's stock abbreviation will be changed to CleanTech on November 26, 2025, while the stock code "688335" will remain unchanged. The proposal to change the stock abbreviation was approved at the twelfth meeting of the fourth board of directors with 9 in favor, 0 against, and 0 abstentions.