Bangkok, April 21, 2014 ? The SEC jointly with the National Science and Technology Development Agency (NSTDA), the Stock Exchange of Thailand (SET), the Thai Business Incubators and Science Parks

13 November 2019 Subject : Explanation of the operating results for the nine months of the year 2019, change in excess of 20% Attention: Directors and Managers the Stock Exchange of Thailand According

Financial and Ratio As at 31 December 2018 2017 Liquidity Ratio Current Ratio (Time) 1.4 1.7 Quick Ratio (Time) 4.3 3.5 Collection Period (Day) 24.4 25.6 Stock Turnover Period (Day) 8.2 6.9 Payment Period

services revenue Table 2: Sales Revenue by Geography for the Three Months Period Ended 31 December 2018 and 31 March 2019 (QoQ) Sales by geography Consolidated financial statements Change Increase/(Decrease

: EIC-AD008/2019 February 27, 2019 Subject: Management Discussion and Analysis Yearly Financial Period Ending 31 December 2018 To: President The Stock Exchange of Thailand The Board of Directors of

Public Company Limited To President The Stock Exchange of Thailand Reference GPSC’s letter No. 10040000/021/58 dated on August 26, 2015 regarding the project of Central Utility Plant 4 or Central Utility

/2019. 2/ Impact from the adoption of Thai Financial Reporting Standards 16 Leases (TFRS 16) since 1 January 2020 which caused higher depreciation and interest expenses (net after tax). Operating

Samutprakarn, Samutprakarn 10280, Thailand Tel. 66 2323 1085..96 Fax. 66 2323 9283 (Translation) 11 May 2018 Subject: Management Discussion and Analysis (MD&A) of Q1/2018 To: Director and manager The Stock

Feb 23, 2018 Subject: Management Discussion and Analysis for Year Ended December 31, 2017 To: Listing Department, Stock Exchange of Thailand Patkol Public Company Limited : Management Discussion and

period of last year The explanation for Company’s Operation change from same period more than 20% To : The President, The Stock Exchange of Thailand T.C.J. Asia Public Company Limited (“TCJ”) and its