September 2017 Subject: Notification of the Board of Directors No.8/2017 and the date of the Extraordinary General Meeting of Shareholders No. 1/2017 To: The President The Stock Exchange of Thailand Enclosure

last year ending 31 December 2016 We have committed ourselves to strategies that emphasized on building up strong fundamentals in order to drive our businesses towards a sustainable growth organization

IVL's ESG rating. With strong foundation and ongoing commitment, IVL is poised for ongoing growth going forward. 1Q 2019 Performance Highlights  Production of 3 million tons (+28% YoY; +5% QoQ) with

improvement in IVL's ESG rating. With strong foundation and ongoing commitment, IVL is poised for ongoing growth going forward. 1Q 2019 Performance Highlights  Production of 3 million tons (+28% YoY; +5% QoQ

Speciality Chemicals segment to be growth segments. The acquired business is fully integrated downstream in Surfactants (used in personal and home care) and in Propylene Oxides (used in insulation and foam

. 5. General Characteristics of the Transaction Transaction Type: Acquisition or Disposal of Assets of Category 2 as classified following the Notification of the Stock Exchange of Thailand Consideration

authorized land office within 31 March 2019. The transaction mentioned above is considered as a disposal of assets in accordance with the Notification of the Capital Market Supervisory Board No. TorChor. 20

percent, driven mainly by a favorable growth of the global economy which positively impacts on export sector, an acceleration of public investment along with the progress of key investment projects and

UNOFFICIAL TRANSLATION Readers should be aware that only the original Thai text has legal force and that this English translation is strictly for reference. Notification of the Office of the

for reference. The SEC, Thailand cannot undertake any responsibility for its accuracy, nor be held liable for any loss or damages arising from or related to its use. ---------------------- Notification