derived from the following reasons: 1. Engineering service (“EN”) had a decrease in gross profit for Baht (94.87) million as the following reasons: 1.1 Cost incurred from the delay under the contract

Limited and its subsidiaries had the operation results for the six-month period ended June, 2017 with the following details: unit: THB million 2017 2016 Change (THB million) Change (%) Revenue from Sales

7.01 40.54% Consolidated financial information The gross profit increased Baht 11.83 million or 20.58%; from Baht 57.49 million in quarter 1/2017 to Baht 69.31 million in quarter 1/2018, due to following

September 2019 • Increase in gross profit was mainly derived from the following reasons: 1. Engineering service (“EN”) had an increase in gross profit for Baht 53 million because of no revision of estimated

31 March 2020 • Decrease in gross profit was mainly derived from the following reasons: 1. Engineering service (“EN”) had a decrease in gross profit for Baht (8 ) million because of decrease in revenue

results by business for the three-month period ended 31 March 2019  Decrease in gross profit was mainly derived from the following reasons: 1. Engineering service (“EN”) had a decrease in gross profit for

June 30, 2017. Net profit decrease of Baht 14.37 million or 18.15% from the corresponding period of the previous year as the following details below: 1. Revenue from sales and services increased Baht

Income For the year period of (unit: million baht) Dec 31, 2017 Dec 31, 2016 + / - Sales and Services 1,248.30 955.72 292.58 30.61% Gross Profit 267.27 161.36 105.91 65.63% Other Income 78.78 75.76 3.02

quarter period ended March 31, 2018 resulted in increase in net profit of Baht 14.34 million or 27.27% from the corresponding period of the previous year as the following details below: 1. Revenue from

10.5% from Baht 674.8 million in Q1 2021 to Baht 745.8 million in Q1 2022. However, Gross profit margin decreased from 12.1% in Q1 2021 to 11.1% in Q1 2022 for the following reasons: 1) In Thailand, we