November 13, 2020 Subject: The Management Discussion and Analysis for the third quarter ended September 30, 2020 To: President The Stock Exchange of Thailand Well Graded Engineering Public Company Limited

Attn : The Directors and The MAI Manager Ref: Dimet AC 1811/001 November 13, 2018 Attention: The Directors and The MAI Manager The Stock Exchange of Thailand Subject: Report on Q.1’s performance

EMC Public Company Limited (EMC).With the referral from the Stock Exchange of Thailand, the SEC probed into the case and found that during October 16-18, 2013, Paiboon, then EMC Managing Director

: Clarification of the Company’s operation for year 2018 compared to 2017 To: Directors and Managers The Stock Exchange of Thailand PAE (Thailand) Public Company Limited and its subsidiaries would like to clarify

1 / 2 IR.019/2017 15 August 2017 Re: Clarification on the change of profit and loss statement To President The Stock Exchange of Thailand T Engineering Corporation Public Company Limited (the

: Clarification of the Company’s operation for 6 month period of 2019 compared to year 2018 To: Directors and Managers The Stock Exchange of Thailand PAE (Thailand) Public Company Limited and its subsidiaries would

November 28, 2005 No. 14/2019 13 November 2019 President The Stock Exchange of Thailand 93 Ratchadapisek Road, Kwang Dindaeng, Khet Dindaeng, Bangkok 10400 Subject : Clarification of the operating

PUBLIC COMPANY LIMITED WGE: WELL GRADED ENGINEERING PUBLIC COMPANY LIMITED   Reset WELL MANAGEMENT CORPORATION PUBLIC COMPANY LIMITED Sustainability Development Ranking CG Score 1/ CG Score AGM Level 2

The International Engineering Public Company Limited International Engineering Public Company Limited failed to prepare and submit the reviewed financial statements for Q2/2016 and Q3/2016 to the SEC

1 / 2 No.IR.018/2020 14 May 2020 Re: Notification of the changes of the Profit and Loss Statement To: President Stock Exchange of Thailand We, T Engineering Corporation Public Company Limited (the