% This is the result from increasing in short term loans from financial institutions using for company’s working capital. Yours faithfully (Mr. Pert Leevilaikunratt) Company Secretary

Ref Ref. 2S_BoD008/2019 May 13th, 2019 Subject: Clarification of the change in operating result more than 20% To : The president The Stock Exchange of Thailand 2S Metal Public Company Limited (the

Thailand The operating performance for three-month period ended 31 March 2018 of Mahachai Hospital Public Company Limited was highlighted as follow: Company performance for three-month period ended 31 March

Ref Ref. 2S_BoD024/2018 August 14th, 2018 Subject: Clarification of the change in operating result more than 20% To : The president The Stock Exchange of Thailand 2S Metal Public Company Limited (the

Ref Ref. 2S_BoD029/2018 November 14th, 2018 Subject: Clarification of the change in operating result more than 20% To : The president The Stock Exchange of Thailand 2S Metal Public Company Limited

same period in 2017. This was mainly from increasing in revenue of “Thailand Mobile Expo” events since the Company expanded rental space from Queen Sirikit National Convention Center. Moreover, the

revenue of THB 1,004.22 million, increasing THB 178.01 million, or 21.55% from 2016. The increase in revenue is mainly due to the growth in revenue from the Company and subsidiaries in Thailand, which

PUBLIC COMPANY LIMITED Selling Expenses The selling expenses for the 2nd quarterof Year 2018 and 2019 were in amounts of Baht 2.96 million and Baht 3.30 million, increasing by 11.6%. The proportion of

Quality Construction Products Public Company Limited (“Q-CON”) would like to clarify the main reason that caused operating result for the second quarter 2019 changed more than 20 percent that of 2018. Q-CON

2019 Quality Construction Products Public Company Limited (“Q-CON”) would like to clarify the main reason that caused operating result for the third quarter 2019 changed more than 20 percent that of 2018