1 Translation CEN 012-2020 May 15, 2020 Subject : Management discussion and analysis for business operation Quarter 1-2020 To : The Manager and President The Stock Exchange of Thailand Summarization

% from year 2016. Current assets mainly increased from the increase of inventory due to more hot-rolled coil stock, from THB 1,991 million as of December 2016 to THB 2,597 million as of 30 September 2017

YONG THAI PUBLIC COMPANY LIMITED 633/14 Sathupradit Road, Yannawa, Bangkok 10120 Thailand Tel. (662) 2943364-8, Fax : (662) 2943373 YTC 25/2019 November 14, 2019 To : The President The Stock Exchange

Period (Q1/2018) Attention: Directors and Manager, The Stock Exchange of Thailand N.D. Rubber Public Company Limited (“the Company”) would like to present the MD&A for the Three Month period ended 31 March

Period (Q1/2018) (Revise No.1) Attention: Directors and Manager, The Stock Exchange of Thailand N.D. Rubber Public Company Limited (“the Company”) would like to present the MD&A for the Three Month period

Three Month Period (Q2/2018) Attention: Directors and Manager, The Stock Exchange of Thailand N.D. Rubber Public Company Limited (“the Company”) would like to present the MD&A for the Three Month period

the Three Month Period (Q2/2018) (Revised 1) Attention: Directors and Manager, The Stock Exchange of Thailand N.D. Rubber Public Company Limited (“the Company”) would like to present the MD&A for the

Analysis (MD&A) Report for the Three Month Period (Q3/2018) Attention: Directors and Manager, The Stock Exchange of Thailand N.D. Rubber Public Company Limited (“the Company”) would like to present the MD&A

No. B52-201911/001 11 November 2019 Subject: Management Discussion and Analysis - for the three-month period ended 30 September 2019. To: The President of Stock Exchange of Thailand B-52 Capital

73 1 / 4 (Translation) Ref. MD.005/2020 28th February 2020 Subj Management Discussion and Analysis (MD&A) of 2019 (Edit) Dear Managing Director of Stock Exchange of Thailand We, Patum Rice Mill and