1 Translation CEN 001-2021 March 1, 2021 Subject Management Discussion and Analysis for the year 2020 To The Manager and President The Stock Exchange of Thailand Capital Engineering Network Public

Translation CEN 001-2020 March 2, 2020 Subject Management Discussion and Analysis for business operation of year 2019 To The Manager and President The Stock Exchange of Thailand Business operation as

Exchange of Thailand Earth Tech Environment Public Company Limited (“the Company”) would like to inform the management’s explanation and analysis for the Company’s operating results for three months and nine

securities and exchange; “Stock Exchange” means the Stock Exchange of Thailand according to the law on securities and exchange; “board of directors” means the board of directors of a securities clearing house

March 20, 2019 Re: Notification of the Resolutions on the Acquisition of Land and Establishment of Subsidiary To: The President The Stock Exchange of Thailand Attachment 1. Information Memorandum of the

Ref Ref. HF 0021 / 2018 February 23rd, 2018 Subject : Notification of the resolution of the Board of Directors No. 1/2018 (Edit) To : Director and Manager of The Stock Exchange of Thailand We, Hwa

/2018) To : Director and Manager of The Stock Exchange of Thailand We, Hwa Fong Rubber (Thailand) Public Company Limited, would like to notify the resolution of the Board of Directors Meeting No.1/2018

Ref Ref. HF 0021 / 2018 February 23rd, 2018 Subject : Notification of the resolution of the Board of Directors No. 1/2018 To : Director and Manager of The Stock Exchange of Thailand We, Hwa Fong

. Moreover, a stagnant of Thai economy in the first half of 2017 causes a lower demand of steel consumption. According to ISITCs data, total apparent finished steel consumption of Thailand for the first 6

serve the increasing demand from customers while it was opposite with the plunge of overall steel consumption in Thailand in 2017. Moreover, the Company had successfully restructured its legacy debts