Rungcharoenchai, Ex-TUCC Director, Deputy CEO, and CFO, and (4) Miss Nitaya Yongphithakwatana, TUCC Director and General Administration Department Director, dishonestly violated their duties, obtained unlawful

Miss Preeya Wongsongja Mr. Woraphant Chontong while being a director, executive director and senior executive vice president of financial and administration division of Sino-Thai Engineering and

her by Mr. Woraphant Chontong, her father, who was a director, executive director and senior executive vice president of financial and administration division of Sino-Thai Engineering and Construction

929,354 (18,647) (2.01%) Gross profit margin 315,647 325,527 (9,880) (3.04%) Selling Expenses 91,735 88,001 3,734 4.24%) Admin Expenses 89,134 79,800 9,334 11.70%) Net profit 106,678 128,745 (22,067) (17.14

/2019 ended September 30, 2019 of the Company and its subsidiaries as shown below: (Unit: Thousand Baht) Revenue Gross profit Selling Admin Net profit Q3/18 249,407 89,092 21,509 18,502 32,736 Q3/19

วนัท าการ เจำ้หนำ้ที่ ฝ่ำยไอที Account Administrator (ผูบ้รหิารบญัชผีูใ้ชง้าน) ระบบบรหิารจดัการบญัชีผูใ้ชง้านบคุคลภายนอก (EXAM) : https://market.sec.or.th/exam • หากยงัไมม่ี account admin ระบบจะแสดงขอ้

2.01% from gross profit of 15.64% in the fourth quarter of 2016. 2/2 Sales and Administration cost The company recorded sales and administration cost of 175.80 million Baht in the year ended December 31

million Baht increased by 133 million Baht (20%) effect from high of work volume. Selling and administration expenses amount 121 million Baht increased by 3 million Baht (3%) from last year. This expenses

cost. 3) Selling and Administration Expenses Selling and administration expenses decreased by Baht 11.4 million, or 6.5% from Q2/2016, as a result of improved efficiency in cost and expenses control. 4

, however, the cost per unit was reduced due to the increment of sales quantity and production quantity. Expense Sales and Administration Cost The company had the selling cost of 6.74 million baht, increased