distribution of round bar, steel products and structural steel products. Operating performance for the 6 months ended June 30, 2019 Company and its subsidiaries with revenue from sales and services amount of
distribution of round bar, steel products and structural steel products. Operating performance for the year ended December 31, 2019 Company and its subsidiaries with revenue from sales and services amount of
SINO-THAI ENGINEERING AND CONSTRUCTION PUBLIC COMPANY LIMITED SIRAKORN PUBLIC COMPANY LIMITED SIS DISTRIBUTION (THAILAND) PUBLIC COMPANY LIMITED SISB PUBLIC COMPANY LIMITED SITRON POWER PUBLIC COMPANY