the area of PTT Global Chemical Public Company Limited, as detailed in the enclosure 1. 3) Acknowledged the resignation as a Director of the Company of Mr. Hiroaki Ono, effective from 25 April 2018. 2 4

to average Total Equity Yours faithfully, (Mr. Hiroaki Sano) Managing Director

Equity Return on Assets (ROA) = Profit before financial costs and income tax to average Total Assets Return on Equity (ROE) = Net Profit to average Total Equity Yours faithfully, (Mr. Hiroaki Sano

(ROA) = Profit before financial costs and income tax to average Total Assets Return on Equity (ROE) = Net Profit to average Total Equity Yours faithfully, (Mr. Hiroaki Sano) Managing Director

the regulations prescribed by SET. Details of services are provided in Attachment 1. Please be informed accordingly. Sincerely yours, (Mr. Hiroaki Sano) Managing Director (Attachment 1) Vinythai Public

faithfully, Mr. Hiroaki Sano Managing Director 2018 2017 Gross profit margin 21.5% 19.9% Net profit margin 15.2% 11.6% Debt to Equity ratio 0.09 0.11 Earnings per share 2.58 1.90 ROA 15.8% 12.3% ROE 16.3% 13.2%

average Total Assets Return on Equity (ROE) = Net Profit to average Total Equity Yours faithfully, Mr. Hiroaki Sano Managing Director 2019 2018 Gross profit margin 23.7% 21.5% Net profit margin 19.3% 15.2

to average Total Equity Yours faithfully, (Mr. Hiroaki Sano) Managing Director 2017 2016 Gross profit margin 20.6% 13.5% Net profit margin 11.6% 7.1% Debt to Equity ratio 0.11 0.15 Earnings per share