YONG THAI PUBLIC COMPANY LIMITED 633/14 Sathupradit Road, Yannawa, Bangkok 10120 Thailand Tel. (662) 2943364-8, Fax : (662) 2943373 YTC 19/2018 November 14, 2018 To : The President The Stock Exchange

YONG THAI PUBLIC COMPANY LIMITED 633/14 Sathupradit Road, Yannawa, Bangkok 10120 Thailand Tel. (662) 2943364-8, Fax : (662) 2943373 YTC 1/2018 February 28, 2018 To : The President The Stock Exchange

rfo rm an ce Revenues 15,178 11,669 Sales Volume (k tons) 812 722 EBITDA 1,062 1,189 Net Profit (Loss) 990 (7) HR C HRC Sales (k tons) 812 722 HRC Production Volume (k tons) 876 733 HRC Average Selling

Q1/2013 – Q4/2017 Processed price data from: Metal Expert Overview of Thai Steel Industry ISIT had reported the domestic steel-production for 2017 was at 6.87 million metric tons, decreasing 13.72

world market for Q1/2013 – Q3/2017 Processed price data from: Metal Expert Overview of Thai Steel Industry ISIT had reported the domestic steel-production Q3/2017 was at 1.70 million metric tons

Q1/2014 – Q2/2018 Processed price data from: Metal Expert Overview of Thai Steel Industry ISIT had reported the domestic steel-production in Jan. – Jun. 2018 was at 3.46 million metric tons, decreasing

variety of academic projects. Vorapol Socatiyanurak, SEC Secretary-General said, "This MOU signing will promote academic sector participation in the Thai capital market and economic development. Under this

YONG THAI PUBLIC COMPANY LIMITED 633/14 Sathupradit Road, Yannawa, Bangkok 10120 Thailand Tel. (662) 2943364-8, Fax : (662)2943373 YTC 12/2020 28 February ,2020 Subject Clarification for the year

the Stock Exchange of Thailand Attachment: Copy of financial statements dated on 30th June 2017 Thai-English each. Union Pioneer Public Company Limited would like to clarify the net profit for the 2nd

from last year. Revenue from sales decreased 1.66 percent due to the effect of Thai Baht appreciation and sale price declining, even though sale volume and proportion of sale in CNF incoterm increased