During 1-5 of September 2015, COT team of Mr.Pisit Puthipiroj the managing director, Mr.Somkid Poomchat deputy manager of environmental department, Mr.Kiattisak Tiamtanong the energy engineer, had attended the “Environment & Energy Tech 2015 (ENTECH 2015) at Pusan, Republic of Korea. The team had investigated chance of Thai business expansion in the event with entry fees supported by office of Trade and Investment Promotion Board of Korea in Thailand.