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

million Baht or 4.43% compared to the same period of 2 0 1 6, due to the increasing of depreciation and amortization by 23.41 million Baht from the amortized assets under concession agreements that the

% , due to the increasing of depreciation and amortization by 40.34 million Baht from the amortized assets under concession agreements that the company has invested to expand the capacity and improve

- Page 6 of 7 Consolidated financial position of the Group as of 31 March 2018 in comparison with that as of 31 December 2017 Assets Total assets as of 31 March 2018 and 31 December 2017 were THB 14,050

Baht 235.7 million. The key elements of Assets in the Company’s Consolidated Financial Statements consisted of: (i) Investments in Associates of Baht 12,796.0 million, (ii) Net Property Plant and

591 372 284 183 157 145 123 1,303 1,155 Q4/20 Q2/21 Cash and Cash equivalent Land, Property and Equipment Other current assets Other non-current assets Equity Current Liabilities Non-current Liabilities

43,129 37,637 15% Inventories 68,601 70,085 (2)% Other current assets 11,762 10,850 8% Total current assets 130,584 124,284 5% Investment 2,378 5,294 (55)% Property, plant and equipment 214,435 205,182 5

5,294 (55)% Property, plant and equipment 214,435 205,182 5% Intangible assets 42,751 40,349 6% Deferred tax assets 2,583 2,714 (5)% Other assets 2,735 1,371 99% Total assets 395,465 379,195 4

1,076.24 1,522.44 (446.20) -29.31% Restricted bank deposits 56.40 56.40 0.00 0.00% Property, plant and equipment 1,346.28 1,376.73 (30.45) -2.21% Other non-current assets 2.33 3.04 (0.70) -23.17% Total

% QoQ benefited from a better operating performance, fully depreciated 3G assets, and one-time gain recognized in this quarter. 3Q23 MD&A Advanced Info Service Plc. 2 3Q23 Operational Summary 3Q23