follows; Unit: THB million Three-month period % Change +/(-) Six-month period % Change Q2’19 Q1’20 Q2’20 QoQ YoY 6M’19 6M’20 +/(-) 1. Revenue from sales and contract work 2.7 4.7 5.5 16.7% 102.9% 5.9 10.2

Ref Ref. 2S_BoD017/2019 November 13th, 2019 Subject: Clarification of the change in operating result more than 20% To : The president The Stock Exchange of Thailand The Board of Directors’ meeting of

August 11,2010 May 11, 2017 Re : Clarification on percentage of change more than 20% in Q1/2017 To : Director and Manager of the Stock Exchange of Thailand Revenue from sales The Company's revenue

2,097.62 1,600.35 Selling & Administrative Expense 127.83 116.99 Finance Costs 24.24 22.96 Net Profit 101.40 (18.95) Earnings per share (Baht) 0.25 (0.047) The company will explain the cause of change as

decreased from the same period last year more than 20% as follows: 1. Operating Results Q2 Q2 Change 6 months 6 months Change Unit : Million baht 2016 2017 Amount % 2016 2017 Amount % Revenue from sales

No.002/2017 February 09, 2017 Subject: Report the operating result for the year ended December 31, 2017 and the explanation for the causes of change more than 20% in the Company’s performance To: The

1,947.37 2,097.62 Selling & Administrative Expense 120.12 127.83 Finance Costs 20.98 24.24 Net Profit 9.12 101.40 Earnings per share (Baht) 0.02 0.25 The company will explain the cause of change as follow: 1

followings: Revenue form Sales for Q3 year 2018 and Q3 year 2017 was 466.86 million baht and 433.18 million baht, respectively. Revenue from sales increased at the amount of 33.68 million baht or 7.78% when

ที่ กบร No. Lor Gor. 016/2020 May 13, 2020 President The Stock Exchange of Thailand Re : Clarification on the company’s over 20% change in its operating results for 2nd quarter, 2020 Dear Sir, Thai

revenue sharing at 35 percent of the project value or approximately 1,120 million baht. This information was thus material to positive change in the SOLAR share price. The SEC considered that Sunthorn