Chulabhorn District Nakhon Si Thammarat Bioremediation is the area between the districts of Cha-uat. In areas such as the areas are remote and far away from the district. And the convenience of the public on January 29, 2537 and was given permission to use the name of Professor Dr. Her Royal Highness. Princess Chulabhorn Walailak Archdiocese Royal Was named District The opening ceremony and the district began public service on 7 March 2537.