No. ED-MD2020-0012 7 April 2020 Subject: Notification of the changing of the Meeting venue of the Annual General Meeting of Shareholders 2 0 2 0 and the progress of the water supply project to the

increase of 206.2 MB and 133.3 MB, respectively, due to the auctioned projects, which were bid at the end of Q1-2017, has gradually delivered in the Q2-2017. The overall economy expansion in Q2-2017 has

bid of the provincial waterworks authority with the individual percentage of the capital contributions in proportion of 49 : 51, respectively, of the registered capital of Baht 1 million. The captioned

ACC6207/003 25 July 2019 Subject Inform the progress of the sale stock in the subsidiary company To Director/ Managing Director The Stock Exchange of Thailand Refer to the company's letter No

increase of 287.7 MB and 488.6 MB, respectively, due to the auctioned projects, which were bid at the previous quarter, has gradually delivered in the Q3-2017. The overall economy expansion in Q3-2017 has

PPG products caused we cannot bid for any projects , and we have to set up provision for obsoleted raw materials and stocks. Please be informed. Yours Sincerely, Panya Boonyapiwat Chairman

, Nakorn Ratchasima. 30380 Tel: (66) 4429 1333, Fax: (66) 4429 1723 Website: www.navanakorn.co.th IR 008/100/2019 October 31,2019 Subject : Progress of the share acquisition of Thai Thanan Company Limited

investment in subsidiary companies 22.41 million and loss from impairment of increased investment in associates 107.17 million Progress on court’s consideration and legal enforcement of the main debtors 1.1

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

industrial waste to energy power plant project located at Ratchaburi Industrial Estate and operated by Progress Interchem (Thailand) Co., Ltd. (“Interchem”) with a contracted capacity of 4.0 MW (an installed