Public Company Limited 148/1 Soi Ramintha 14, Ramintra Road , Tharang, Sub - District Bangkok 10230 Tel: 02-943-6663-4 Fax: 02-943-6343 02-943-7740 Classified into Ordinary Shares 723,881,866 shares (Seven

fair value through profit or loss (FVTPL)”(Classified as debt instruments according to accounting standard). Given on May 11, 2020, the Federation of Accounting Professions passed the resolution on the

equivalent 10.28% calculated based on Net Profit of Consideration (2.83% calculated based on Total Value of Consideration or 4.99% calculated based on Asset Value) which is less than 15% and classified as

of Listed Companies B.E. 2547 dated October 29, 2004, the Transactions classified as a class 2 transaction. Hence, UAC would like to submit the Information Memorandum on the Acquisition of Assets as

revenues A. Revenues from service, classified by type of revenues 1.2.1 Revenues from dental services Unit : Million Baht March 31, 2019 March 31, 2018 Increase (Decrease) Amount % Medical treatment 112.58

type of revenues A. Revenues from service, classified by type of revenues 1.2.1 Revenues from dental services Unit : Million Baht Items For the year Increase (Decrease) Dec. 31, 19 Dec 31, 18 Amount

.  Disposal asset group classified as held for sales decreased from THB 1,136.81 million as at December 31, 2019 to THB 1,099.28 million as at Q1-2020 as a result of the following factions: o Decreasing in

year, and from the provision of employee benefit for retirement, a non-recurring item classified under administrative expenses. Excluding the non-recurring items and the performance of residential

presented in Figure 2 Figure 2 The country’s contracted capacity of electricity in 2017 classified by producer Source: Electricity Generating Authority of Thailand In the second quarter of 2017, Ministry of

transaction is not classified as a related party transaction. Please be informed accordingly. Sincerely yours, – Signature – (Mr.Chuangchai Nawongs) Chief Executive Officer