ABICO 011/KV/2017 August 10, 2017 Subject : Explanation on operation result for the Quarter ended June 30, 2017. To : Director and Manager Stock Exchange of Thailand Abico Holdings Public Company

ABICO 01 /KV/2017 November 9, 2017 Subject : Explanation on operation result for the Quarter ended September 30, 2017. To : Director and Manager Stock Exchange of Thailand Abico Holdings Public

ABICO 012/KV/2017 November 10, 2017 Subject : Explanation on operation result for the Quarter ended September 30, 2017,(Edit) To : Director and Manager Stock Exchange of Thailand Abico Holdings

1 / 2 IR.017/2019 13 August 2019 Re: Notification of the changes of the Profit and Loss Statement To President The Stock Exchange of Thailand We, T Engineering Corporation Public Company Limited (the

No. : 0107535000371 No. L039/2018 7th August 2018 Subject : The explanation of operating results for the 2nd quarter 2018 Attention : The President The Stock Exchange of Thailand Dear Sir, For the

1 / 2 IR.017/2018 14 August 2018 Re: Notification of the changes of the Profit and Loss Statement To President The Stock Exchange of Thailand We, T Engineering Corporation Public Company Limited (the

1 / 2 IR.023/2018 13 November 2018 Re: Notification of the changes of the Profit and Loss Statement To President The Stock Exchange of Thailand We, T Engineering Corporation Public Company Limited

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

Ref No. CC20170803ELE August 10, 2017 Re: Clarification of the changes in operation performance for the second quarter and the first half ended June 30, 2017 Attn: The President The Stock Exchange of