Year Ended December 31, 2017 Page 1 (Translation) 1. Significant events of the year 2017 1.1 The Progress of Projects 1.1.1 Collinsville Solar Power Project in Australia ("The Project") On May 5, 2017

Pink Line Project Technology Monorail Route Khae Rai-Min Buri Ownership 10% Contract Term 30 years COD 2022 Progress Civil Works = 60.31% Railway System = 53.91% MRT Yellow Line Project Technology

' development progress not achieve the Company's target. Management Discussion and Analysis For the Three-month and Nine-month Periods Ended 30 September, 2017 Page 2 2. Operation performance according to

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

resolution of the Board of Directors with respect to the Transaction and the progress of the Transaction to the investors and the Stock Exchange today. Please be informed accordingly, Yours faithfully, -Signed

, 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

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

anniversary, and these collections are suit for every customer segment e.g. CENTENNIAL JUBILEE 90 FACTES, 90th ANNIVERSARY COLLECTION, EVENTAIL, THE EXCELLENCE OF 19, THE YELLOW MYSTERY, THE PINK MAJESTY

Generating Authority of Thailand. It is expected to commence commercial operation in 2019. 1.4 The Entering into the Concession Contracts of the MRT Pink Line Project and the MRT Yellow Line Project As the

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