2020 as the date determining the shareholders entitled to attend the Extraordinary General Meeting of Shareholders No. 1/2020 (Record Date) The Company will notify the shareholders of the new schedule

down for 38 days for routine maintenance and catalyst change which was due for scheduled replacement. The US gas cracker will provide ethylene feedstock is expected to start up in 1H19. Fibers Production

- Translation - LPH/SET/2017/024 October 2, 2017 Subject : Schedule for the date and agenda of the Extraordinary General Meeting of the Shareholders No.1/2017 (Revised) To : President The Stock

(Enclosure 4) 1 (-Translation-) Information Memorandum on the Connected Transaction and Asset Acquisition of Master Ad Public Company Limited pursuant to Schedule 2 of the Notification of the Board

: Schedule f No.1/2017 : President The Stock ard of Directo ”) No. 5/2017 ermined the GM No. 1/20 room, The G gkapi, Bang ermined the 1/2017 on Mo ermined the a 1 : ard of Directo 2 : ard of Directo for the

-Translation- Ref. No. PorBor. 004 / 2020 January 10, 2020 Subject: Notifying cancellation of the resolution of the Board of Directors’ Meeting and Schedule Entering into Transaction of Disposing of

extent of the interest of the connected persons in the transaction : -Non- 9. This transaction allows to standard of receiving and selling of assets. In this schedule the company sold out the investment

selling of assets. In this schedule the company sold out the investment port amount 27,000 baht related to total assets of the company was less than 15% of total assets and the company has no transaction

Company Limited 140/1 KHANJANAPISEK RD., BANGKAE, BANGKAE, BANGKOK, THAILAND. 10160 Tel: 02-455-2888 Fax: 02-455-2763 ( “TRANSLATION” ) No. TG 024 / 2561 6 February 2018 Subject Schedule for the

occur from several projects and backlogs of IGE and subsidiaries. The contracts of the projects have been postponed and made the revenue recognition is not on schedule. 2. Sales and Services increase from