sales and services to sales ratio for the Group were 71.96% in 2017 compared to 79.17% in 2016. The decrease in the cost of sales ratio is due to the effectiveness of controlling and managing the budget

itself and its overseas subsidiaries’ operation as well as marketing and managing expense to support existing customers. 4. Financial Cost For the year 2018, the Company’s financial cost was Bt. 818.90

No. 2/2019 held on February 25, 2019 authorized the Acting Managing Director and/or Executive Committee to proceed and complete the sales of ordinary shares and claim payment of the company’s loans

ACC6206/004 28 June 2019 Subject Inform the progress of the sale stock in the subsidiary company To Director/ Managing Director The Stock Exchange of Thailand According to the meeting of the Board of

1 - TRANSLATION - KT/PB (Q-Con) 020/2019 August 7, 2019. Attention Managing Director The Stock Exchange of Thailand Subject : Management Discussion and Analysis the second quarter ended 30 June 2019

consolidated expense of supporting the Company itself and its overseas subsidiaries’ operation as well as marketing and managing expense to support existing and new customers as compared. 4. Financial Cost For

1 - TRANSLATION - VS/PC (Q-CON) 026/2018 August 06th , 2018. Attention Director and Managing Director The Stock Exchange of Thailand Subject : Management Discussion and Analysis the second quarter

ACC1/18-042 6 September 2018 Subject : The Information of a Disposition of Assets of the Subsidiary (Revise) To: Director and Managing Director The Stock Exchange of Thailand Qualitech Public Company

1 - TRANSLATION - KT/KP (Q-CON) 007/2018 November 1st , 2018. Attention Managing Director The Stock Exchange of Thailand Subject : Management Discussion and Analysis the third quarter ended 30

1 - TRANSLATION - KT/PB (Q-Con) 004/2019 February 4,2019. Attention Managing Director The Stock Exchange of Thailand Subject : Management Discussion and Analysis for year 2018 Quality Construction