October 30, 2020 Subject: The Management Discussion and Analysis for the year ended 31st December 2019 To: President The Stock Exchange of Thailand Well Graded Engineering Public Company Limited (“the

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

Page 1 of 3 No. ACC6308/002 13 September 2020 เรื่อง Operating Results Clarification for the second quarter 2020, ended June 30 2020 เรียน Director/ Managing Director The Stock Exchange of Thailand

, derivatives business operators and asset management companies: Due to the trading suspension on the Stock Exchange and the Derivatives Exchange, potentially causing securities companies, derivatives business

prohibited from trading securities on the Stock Exchange or over-the-counter trading centers or entering into derivatives contracts on the Derivatives Exchange for one year and six months, and banned from

(Additional) To President The Stock Exchange of Thailand Enclosure 1. Information Memorandum on the Asset Acquisition (Addendum 1) regarding acquisition of shares of S-TREK (Thailand) Co., Ltd. in the

Amount and Term of Bond Issuance, and Determination of Date of the Extraordinary General Meeting of Shareholders No.1/2018 To: The President of the Stock Exchange of Thailand Enclosure: 1. Capital Increase

size of more than 3% of net tangible assets of the Company. Therefore, the Company has the duties to disclose the information on the connected transaction to the Stock Exchange of Thailand (the "SET

Amount and Term of Bond Issuance, and Determination of Date of the Extraordinary General Meeting of Shareholders No.1/2018 (Revised No.3) To: The President of the Stock Exchange of Thailand Enclosure: 1

than 0.03% but less than 3% of book value of Net Tangible Assets (Consolidated Financial Statements as at 31 December 2017). Therefore, the company would need to disclose this information to The Stock