No. OMD 013/2562 13 August 2019 Re Explanation and analysis of the Management for the 2nd. quarter of 2019 ended 30 June 2019 To Director and Manager, Stock Exchange of Thailand Whereas the Meeting

9 August, 2018 Re Explanation and analysis of the Management for the 2nd. quarter of 2018 ended 30 June 2018 To Director and Manager, Stock Exchange of Thailand Whereas the Meeting No. 4/2561 of the

12 November, 2018 Re Explanation and analysis of the Management for the 3rd. quarter of 2018 ended 30 September 2018 To Director and Manager, Stock Exchange of Thailand Whereas the Meeting No. 5/2561

/2563 13 May 2020 Re Explanation and analysis of the Management for the 1st quarter of 2020 ended 31 March 2020 To Director and Manager, Stock Exchange of Thailand The Company would like to submit

mentioned. Excluding such non- recurring income, 1Q18 revenues would have grown 9% QoQ, mainly from stronger performance of hotel business. Management Discussion and Analysis 1Q18 Consolidated Financial

., Km. 39.5 Bangpoomai, Amphur Muang Samutprakarn, Samutprakarn 10280, Thailand Tel. 66 2323 1085..96 Fax. 66 2323 9283 (Translation) 20 February 2019 Subject: Management Discussion and Analysis (MD&A) of

(Translation) NEP-AC 001/2563 26 February 2020 Subject: Management Discussion and Analysis for year ended December 31, 2019 To : The President The Stock Exchange of Thailand Operating Result NEP

(Translation) NEP-AC 001/2562 28 February 2019 Subject : Management Discussion and Analysis for year ended 31 December 2018 To : The President The Stock Exchange of Thailand Operating Result NEP

project volume resulting in a price competition and the cost of raw materials used in production is higher than the year 2018. 4. Cost from the water management business for quarter 1/2019 representing

the cost of raw materials used in production is lower than the year 2018. 4. Cost from the water management business for quarter 2/2019 was 70.48% of income. Cost per income rate decreased compared to