ที่ กตพ Ref. DBP. 107 / 2018 August 14, 2018 Subject : Clarification on Operating Results for the 3-month Period and 6-month Period ending June 30, 2018 To : President The Stock Exchange of Thailand

ที่ กตพ Ref. DBP. 156 / 2018 November 12, 2018 Subject : Clarification on Operating Results for the 3rd quarter and 9-month Period ending September 30, 2018 To : President The Stock Exchange of

prices and the Company suffered devaluation loss on Finished Goods stock, Raw Material in stock and in transit as explained above. Though the prices have continued to weaken month on month, we are now

Ref. DBP. 066 / 2020 May 11, 2020 Subject : Clarification on Operating Results for the 1st Quarter ending March 31, 2020 To : President The Stock Exchange of Thailand Diamond Building Products Public

right to purchase, or to convert those securities into, shares of such business; (2) “Business” means a company whose shares are listed on the Stock Exchange; (3) “SEC Notification No. KorChor. 53/2545

management and operation. Presently, the Company holds 99.83% of the total issued and sold shares of GLOW and has completed the delisting of GLOW securities from the Stock Exchange of Thailand on 13 December

Acquisition. To: The President The Stock Exchange of Thailand Enclosure 1. Information Memorandum on the Acquisition of Assets of Hydrotek Public Company Limited 2. Capital Increase Form (F 53-4) 3. Information

. 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

, after the OPEC and allies have jointly initiated production reduction in tandem to their agreement. This would result in improved oil price which will support oil related business to recover in the second

and the Notification of the Board of Governors of the Stock Exchange of Thailand (SET), entitled Disclosure of Information and Other Acts of Listed Companies concerning the Connected Transaction, B.E