After checking with Customs Officers Sugar Import Tariffs to Thailand from AEC member is now 0%, from Korea 7.22% for white sugar and 0% for raw sugar, and from Australia (TAFTA) 21.70% in-quota and 84.60% out-quota.
However, importation of sugar must to approved by OCSB and in their exactly practice only Australia are the same Customs informed but the others still use WTO agreement that is tariff 65% in-quota of 13,760mt/year and 94% for out-quota because they are in considering about identification of imported condition first. Will see if there are any news more.