ระบบคอมพิวเตอร์ และระบบเครือข่าย (Information and Network Security) 5. การควบคุมการพัฒนา หรือแก้ไขเปลี่ยนแปลงระบบงานคอมพิวเตอร์ (Change Management) 6. การสำรองข้อมูลและระบบคอมพิวเตอร์ และการเตรียมพร้อม

(“the Company”) and its Subsidiary (“the Group”) would like to clarify the change in operating result for the year ended 31 December 2018, which net profit has changed more than 20% from the last year as

ผลิตและการใช้เหล็กส าเร็จรูปของไทยปี 2560 และ ปี 2561 Total Apparent Finished Steel (Unit : Tons) 2017 2018 % Change Production 6,875,446 7,106,526 3.36% Import 11,325,592 12,051,411 6.41% Export

เพ่ิมข้ึน 9.54% เม่ือเทียบกับชวงเวลาเดียวกันของปท่ีผานมา ตารางแสดงปริมาณการผลิตและการใชเหล็กสําเร็จรูปของไทยป 2560 และ ป 2561 Total Apparent Finished Steel (Unit : Tons) 2017 2018 % Change Production

(“the Company”) and its Subsidiary (“the Group”) would like to clarify the change in operating result for the first quarter ended 31 March 2019, which changed in revenue and net profit compared with the

of 2018 to approximately 12.0% in the second quarter of 2019 as a result of the change in the company’s pricing and inventory management policy for steel products in the second quarter of 2019. 3

busine m Japan proj increased by sued B/E an f Baht 2,362 s the Co-Gener ofit from inve aht 51.23 mil period of las past service from 300 to 4 d administrat change rate lo aht 33.30 mill used by WPS

design, work suspension or delay due to change in construction design Many projects are gradually completed. Concurrently, many new projects that have been signed into contract or about to be signed which

company and its subsidiaries (which has been terminated their operations). 2020 is the year that bring massive change of UWC as a consequence of the corporate and business strategy restructuring together

expenses of Baht 25 million and the selling expenses to revenue from main business ratio is 1%. There is no significant change in selling expenses and selling expenses to revenue from main business ratio