(-Translation-) Ref. No. U.SET 027/2018 June 4, 2018 Subject: Acquisition of 50 percent of ordinary shares in the subsidiaries of Sansiri Public Company Limited To: The President The Stock Exchange

24 July 2018 To: The President The Stock Exchange of Thailand Re: Q2-2018 operating results We, Delta Electronics (Thailand) Public Company Ltd, would like to notify the Company’s Q2-2018 (Apr-Jun

AC2802/2018 February 28, 2018 Subject: Management Discussion and Analysis for Year2017 To: Managing Director The Stock Exchange of Thailand The company would like to report the operation results for

AC0815/2017 August 15, 2017 Subject: Management Discussion and Analysis for Q2/2017 To: Managing Director The Stock Exchange of Thailand The company would like to report the operation results for the

281.2 million Baht from the previous fiscal year or 14.0% due to benefit from raw material. 3. Selling and administrative expenses decreased by 13.6 million Baht or 2.5%, the company emphasize on the

Ref Ref. 2S_BoD031/2017 November 8th, 2017 Subject: Clarification of the change in operating result more than 20% To : The president The Stock Exchange of Thailand 2S Metal Public Company Limited

-month (Thousands Baht) Change Amount % Revenue from sales , , , .% Other income , , , .% Total Revenue , , , .% Company revenue slightly increased 1.89 percent from the same period of last year, due to

the previous year due to decreased raw material prices and rapid Thai Bath appreciation. 2. Sales cost to revenue ratio decreased by 1.66% (from 95.81% to 94.15%) because the cost of raw materials has

YONG THAI PUBLIC COMPANY LIMITED 633/14 Sathupradit Road, Yannawa, Bangkok 10120 Thailand Tel. (662) 2943364-8, Fax : (662) 2943373 YTC 17/2019 August 14, 2019 To : The President The Stock Exchange

increased from the 2nd quarter of last year of 95.17% and increased from the last quarter of 105.83% .Such high cost was resulted from low productivity and higher procurement cost of raw material. 3. Selling