Ref. DBP. 024 / 2020 February 25, 2020 Subject : Clarification on Operating Results of Year 2019 To : President The Stock Exchange of Thailand Diamond Building Products Public Company Limited and its

Ref. DBP. 025 / 2018 February 21, 2018 Subject : Clarification on operating results of Year 2017 To : President The Stock Exchange of Thailand Diamond Building Products Public Company Limited and its

Discussion and Analysis for Year 2018 ended as of December 31, 2018 (Edited) Attention: President The Stock Exchange of Thailand AI Energy Public Company Limited (AIE) would like to submit the financial

Ref. DBP. 068 / 2018 May 14, 2018 Subject : Clarification on operating results for the 1st Quarter ending March 31, 2018 To : President The Stock Exchange of Thailand Diamond Building Products Public

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

higher spectrum amortization. QoQ, net profit dropped -by 8.1% from lower core service revenue and unrealized foreign exchange loss. Excluding foreign exchange impact, normalized net profit was Bt6,345mn

Securities and Exchange Commission (the “SEC”), in cooperation with the PricewaterhouseCoopers Thailand (“PwC Thailand”), has developed this internal control sufficiency evaluation form (“evaluation form”) as

receivables 705 781 -10% Inventories 909 1,047 -13% Other current assets 173 177 -2% Total current assets 1,909 2,106 -9% Property, plant and equipment 2,089 2,071 +1% Goodwill 213 - - Investments in joint

amongst the companies with the honor of Thailand Sustainability Investment 2017 by the Stock Exchange of Thailand, having demonstrated outstanding achievements in sustainable business operations with utmost

Disposal of Assets Transaction, and Acquisition of Assets Transaction To : Director and Manager The Stock Exchange of Thailand Enclosure Information Memorandum on Acquisition of Assets (Schedule (1)) of