DCORP 023/2018 February 28, 2018 Subject: Report on the overall operation for year 2017 ended December 31, 2017 and the decrease in the overall operation more than 20 percent. Attention: President Stock

DCORP 024/2018 March 2, 2018 Subject: Report on the overall operation for year 2017 ended December 31, 2017 and the decrease in the overall operation more than 20 percent. (Revised) Attention: President

DCORP 048/2018 May 15, 2018 Subject: Report on the overall operation for first quarter of the year 2018 ended March 31, 2018 and the decrease in the overall operation more than 20 percent Attention

quarter of 2018 (“3Q’18”) was THB 427 million, increased 9% yoy. Non-social security yoy revenue growth was highly 18% while social security revenue growth slightly decreased. Non-social security’s

each security for at least three months.  The report must also be updated to reflect the information likely to impact the security?s performance or price.  In case where any security is subject to the

affected from service downgrade during pandemic, while services on cloud, ICT, IoT, cyber security doubled with digitization trend. 5G mobile official packages launched Mobile 5G package was officially

in year 2017 (“2017”) increased 16% yoy. This increase was driven by both non-social security and social security part. Accelerated revenue growth from social security came from higher number of

million, increased 16% yoy. The non-social security revenue and social security revenue grew by 14% and 20% respectively. The growth of non-social security revenue was driven by both OPD (15%) and IPD (12

organizations, or recipients abroad, the SEC Office shall ensure that the destination agencies have sufficient security standards for personal data protection. 4. Retention and Retention Period of Personal Data

year even though the situation seems to get better in this quarter but the overall sales of 6 month-period of this year were still less than last year. 2. Cost of sales of goods and Expenses 2.1. Cost of