The 4th edition of Thailand’s List of Hazardous Chemicals was published on Jan 11th, 2018 and took effect on the next day. In this latest edition of the List, 23 types of chemicals were added to the list, which are regulated by the Department of Industrial Works (DIW). The newly added chemicals were all classified as Type 3 chemicals and subject to specific compliance duties including notification, registration, and application for a license. Recently, DIW clarified some confusions that enterprises encountered during the import and export of the newly added hazardous chemicals: