The idea of 2023 PATTAYA 39th International Conference on “Chemical, Biology, Agriculture and Environmental Science” (CBAES-23) scheduled on March 23-24, 2023 at Pattaya (Thailand) is for the researchers, scientists, scholars, engineers and parctitioners from all around the world to present and share ongoing research activities. This conference provides opportunities for the delegates to exchange new ideas and application experiences face to face, to establish business or research relations and to find global partners for future collaboration.