Professional Waste Technology (1999) Public Company Limited notify the resolutions of the Board of Directors' Meeting No. 4/2022 on May 13, 2022 that, Mr. Anupab Theeranisranon resigned from the audit committee member because there are other tasks and cannot help the company fully but is still an independent director and appointed Mr. Kittipot Chirakul as a new audit committee member because Mr. Kittipot Chirakul has knowledge in accounting and have sufficient experience to review the reliability of the financial statements. Changes will effective from May 17, 2022.