(Translation) UAC.CS/010/2019 May 10, 2019 Subject: Explanation of the operating results for the first quarter period ended March 31, 2019 To: President The Stock Exchange of Thailand Attachment

: pato1@cscoms.com August 11, 2017 President The Stock Exchange of Thailand The consolidated financial statement of Pato Chemical Industry Plc. and its subsidiary for Q2 ended June 30, 2017 operational

purchasing power. However, from Sep-21 onward, restrictions were gradually lifted, resulting in some improvement in consumer spending. Meanwhile, competition in mobile industry remained elevated as operators

1 2Q19 MD&A Advanced Info Service Plc. Executive Summary Competition in mobile saw an improvement In 2Q19 the price competition in mobile industry had improved with fixed speed unlimited data pricing

Attention: Directors and Manager, The Stock Exchange of Thailand N.D. Rubber Public Company Limited (“the Company”) would like to present the MD&A for the Three Month period ended 31 December 2018 (4th

(Revised 1) Attention: Directors and Manager, The Stock Exchange of Thailand N.D. Rubber Public Company Limited (“the Company”) would like to present the MD&A for the Three Month period ended 31 December

sales declined by 9.7% due to intense marketing competition led by strong Thai Baht. Domestic sales portion ended up at 24.9% and export sales at 75.1%. The Company reported gain from foreign exchange

Ref. No. 1805/025EN May 14, 2018 Subject Management Discussion and Analysis for Q1/2018 (Ending March 31, 2018) To Director and Manager of the Stock Exchange of Thailand Ubis (Asia) Public Company

3Q21 MD&A Advanced Info Service Plc. Executive Summary Slight revenue improvement despite COVID restriction measures and continued competition During 3Q21, the economy remained subdue from COVID

- 1 - AIT (VP-SEC) 005E/2019 February 26, 2019 Subject: Management's Discussion and Analysis of Operating Results for the year 2018 and Q4-2018 To: The President of the Stock Exchange of Thailand