Viet Nam Securities Depository and Clearing Corporation (VSDC) would like to announce the record date of corporate action processing for the Securities registering institution as follows:

- Execution rate: 1:1 (1 share - 1 voting right)
- Meeting time: 30/06/2025
- Meeting venue: Level 6 meeting Hall - Head office of Quang Ninh Clean Water Joint Stock Company, No. 449 Nguyen Van Cu Street, Hong Hai Ward, Ha Long City, Quang Ninh
- Meeting agenda: the Company will announce in the meeting materials of 2025 Annual General Meeting posted on the website: htpp://www.quawaco.com.vn and send a printed copy to shareholders when attending the meeting.
Coordination details and procedures for corporate action processing for holders of the above securities between VSDC, the Securities registering institution and depository members are specified in the Guideline on corporate action processing for securities holders at VSDC