Professional Waste Technology (1999) Public Company Limited announced the resignation of Mr. Kasabol Bowonsrikan from director of company and director of JTS Aluminum and Metal Company Limited due to he has raised of missions that do not have time to work for company. This is effective from December 28, 2020 and passed the resolutions of the Board of Directors' Meeting No. 11/2020 dated December 28, 2020 appointed the directors as Mr. Thanakon Janvitayaroj to be director of company instead of Mr. Kasabol Bowonsrikan. This is effective from December 28, 2020. The meeting has appointed the new executive committee as Denchai Akaradajdachachai.