S&P MD&A 2017-Revised Year In Comparison Table -1- Ref. POL. 028/2018 February 23, 2018 Re: Clarification of the Performance of S & P Syndicate Public Company Limited Dear The President The Stock

Management Discussion and Analysis for the second quarter ended June 30, 2019 Attention The President The Stock Exchange of Thailand Attachment Report and interim financial statement for the second quarter

1 IDH-AC-000-อส6208/22.00 9 August 2019 Re: Management Discussion and Analysis Operating results for the three-month and six-month period ended 30 June 2019 To: President The Stock Exchange of

S&P MD&A Q3_2018-ENG -1- Ref. POL. 119/2018 November 09, 2018 Re: Clarification of the Performance of S & P Syndicate Public Company Limited Dear The President The Stock Exchange of Thailand S & P

1 IDH-AC-000-อส6211/08.00 8 November 2019 Re: Management Discussion and Analysis Operating results for the three-month and nine-month period ended 30 September 2019 To: President The Stock Exchange

Management Discussion and Analysis for the third quarter ended September 30, 2019 Attention The President The Stock Exchange of Thailand Attachment Report and interim financial statement for the third quarter

contents are written and underlined in blue. No. ORI 66/2017 1 November 2017 Subject: Resolutions of Board of Directors Meeting No. 12/2017 Attention: President Stock Exchange of Thailand Enclosures: 1

881 Website: www.aapico.com AAPICO HITECH PUBLIC COMPANY LIMITED 2 in the Singapore Stock Exchange Securities Trading Limited to Mr. Yip Tai Him at value of SGD 4,315,079.11 or equivalent to Baht 106

No. BGRIM 2/2019 January 15, 2019 Subject: Additional Investment in Nam Che Hydro Power Co., Ltd. Attn: President The Stock Exchange of Thailand On January 14, 2019, the Board of Directors’ Meeting

1 -Translation- Ref :IR 62/023 December 23, 2019 Subject: Change in Shareholding Structure of Subsidiary Company To: President, The Stock Exchange of Thailand T.K.S. Technologies Public Company