10th May, 2018 Subject: Management Discussion and Analysis (MD&A) of the financial as at and for three months’ period ending 31st March, 2018 Attention: President The Stock Exchange of Thailand P.C.S

(Translation) NEP-AC 001/2561 10 May 2018 Subject : Management Discussion and Analysis for 1st Quarter ended March 31, 2018 To : The President The Stock Exchange of Thailand Operating Result NEP

ที่ กบร No. Kor Bor Ror. 008/2018 May 10, 2018 President The Stock Exchange of Thailand Re : Credit guarantee to A Tech Textile Co., Ltd. on shareholding proportion Ref : Document no. Kor Bor Ror

Acc. 005/2018 May 10, 2018 To: The President The Stock Exchange of Thailand Subject: Management discussion and analysis (MD&A) for Quarter 1/2018 Dear Sir, S. Khonkaen Foods Public Company Limited or

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

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