Assistance to connected person, The Acquisition of Asset, Schedule for Extraordinary General Meeting No. 1/2019 (Revised) To: The President The Stock Exchange of Thailand Attachments: 1. Information Memorandum

operating results for the 3-month period and 6-month period ending June 30, 2017 To : President The Stock Exchange of Thailand Diamond Building Products Public Company Limited and its Subsidiary (together

Ref. DBP. 141 / 2017 November 13, 2017 Subject : Clarification on Operating Results for the 3-Month Period and 9-Month Period ending September 30, 2017 To : President The Stock Exchange of Thailand

Ref. DBP. 111 / 2020 August 10, 2020 Subject : Clarification on Operating Results for the 2nd quarter and 6-month period ending June 30, 2020 To : President The Stock Exchange of Thailand Diamond

. 1/2018 To The President The Stock Exchange of Thailand Attachment 1. Information Memorandum regarding the Offering and Allocation of the Newly Issued Shares of Ocean Commerce Public Company Limited to

Meeting of Shareholders No. 1/2018 (Amendment No.1) To The President The Stock Exchange of Thailand Attachment 1. Information Memorandum regarding the Offering and Allocation of the Newly Issued Shares of

approved the proposed initial public offering of newly issued ordinary share (the IPO) and the listing on the Stock Exchange of Thailand of BBGI Co., Ltd. The number of new ordinary shares to be issued under

from OKEA’s initial public offering, and also THB 82 million gain on foreign exchange forward contract, whereas, this quarter the gain on foreign exchange forward contract was only THB 1 million

The Stock Exchange of Thailand Reference: The Notification No. BGRIM 16/2563 dated 31 August 2020 Re: the readiness for development of 7 combined cycle cogeneration power plants as planned B.Grimm Power

the Board of Directors’ meeting for connected transaction and Schedule date for the Extraordinary General Meeting of Shareholders No. 1/2016 Edited To: The President, The Stocks Exchange of Thailand The