73 1 / 4 Ref. MD 016/2018 10th May 2018. Subj Management Discussion and Analysis (MD&A) Q1/2018 Dear Managing Director of Stock Exchange of Thailand We, Patum Rice Mill and Granary Public Company

and Director The Stock Exchange of Thailand Dear Sirs, Finansia Syrus Securities Public Company would like to disclose the audited separated and consolidated financial statements for the year ended

the Year as at 31 December 2017 To The President The Stock Exchange of Thailand We, ZEN Corporation Group Public Company Limited (“the Group”), are please to inform you our management discussion and

nine-month period ending 30 September 2018 To The President The Stock Exchange of Thailand We, ZEN Corporation Group Public Company Limited (“the Group”), are please to inform you our management

the Year as at 31 December 2017 (revised) To The President The Stock Exchange of Thailand We, ZEN Corporation Group Public Company Limited (“the Group”), are please to inform you our management

-months period ending 30 September 2018 (revised) To The President The Stock Exchange of Thailand We, ZEN Corporation Group Public Company Limited (“the Group”), are please to inform you our management

Registration No. : 0107535000371 No. L001/2019 20th February 2019 Subject : The explanation of operating results for the year 2018 Attention : The President The Stock Exchange of Thailand Dear Sir, For the year

ที่ กตพ Ref. DBP. 030 / 2019 February 20, 2019 Subject : Clarification on Operating Results of Year 2018 To : President The Stock Exchange of Thailand Diamond Building Products Public Company Limited

-9320 1 Ref: PCL 2019/003 February 20, 2019 Subject: Management Discussion and Analysis Yearly Ended 31 December 2018 To: The President of the Stock Exchange of Thailand Panjawattana Plastic Public

. DOD2019/004 February 20, 2019 Subject: Management’s discussion and analysis of the Company’s operating results for the year 2018 period To: President The Stock Exchange of Thailand DOD Biotech Public