801 106 13% Cost of sales and services -789 -621 168 27% -682 -608 74 12% Gross Profit 248 235 13 5% 225 193 32 16% Other Income 5 0 5 1,701% 14 7 7 117% Selling expense -81 -70 11 16% -71 -61 10 17

1 / 2 IR.019/2017 15 August 2017 Re: Clarification on the change of profit and loss statement To President The Stock Exchange of Thailand T Engineering Corporation Public Company Limited (the

1 Year 2019 Quarter 1 Year 2018 Change %YoY Revenue from sales and services 147.0 158.3 (11.3) (7.1%) Revenue from food and beverage sales 132.4 126.0 6.4 5.1% Total 279.4 284.3 (4.9) (1.7%) Gross

million or 74.48%. The major causes of significant change are as follows: Unit : Million Baht Operating results of the Company For the Year ended December 31, 2017 2016 Changes % Revenues : Revenues from

28.5 Mn. 2 Zen Corporation Group Public Company Limited 662 Soi Onnuch 17, Suanluang, Bangkok 10250 THAILAND. Tel: 02-0195000 Performance Statement of comprehensive income 1st Quarter 2020 2021 Change

there was no such tax benefit from IPO expense as in 2016. Financial Position : Consolidated Balance Sheet Mar. Mar. Dec % Change Mar.18- Mar.18- Unit : THB million 2018 2017 207 Mar.17 Dec.17 Cash and

: Million Baht 2018 2017 Change Amount % Amount % Amount % Revenues from dental service 456.15 96.64 386.72 98.70 69.43 17.95 Other revenues 15.88 3.36 5.11 1.30 10.77 210.63 Total revenues from medical

Baht) Separate financial statements 2018 2017 % Change Sales and Service Income 1,940.22 1,979.16 (1.97) Cost of Sales and Services 1,572.51 1,525.25 3.10 Selling and Administrative Expenses 218.91

) Performance Analysis Unit : MB For the year ended Change 2018 2017 MB % Net sales 1,057.38 1,054.67 2.71 0.26 Other income 47.74 46.50 1.24 2.67 Total revenues 1,105.12 1,101.17 3.95 0.36 Cost of goods sold

group. Financial Highlights 2Q 2017 2Q 2016 Change 6M 2017 6M 2016 Change THB million % Sales THB million % Sales THB million % THB Million % Sales THB million % Sales THB million % Revenue from Sales