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

and Analysis for Year Ending December 31, 2018 To : The President The Stock Exchange of Thailand The Board of Directors meeting of Ratchaphruek Hospital Public Company Limited (the Company) No. 1/2019

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 December 2018 (4th

(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 Three Month period ended 31 December

November 12, 2004 1/3 No: SN. 036/2017 May 11, 2017 Subject: Clarification of Operating Results and Financial Status the six-month period ended March 31, 2017 Attention: President The Stock Exchange

Translation CEN 022-2017 August 11, 2017 Subject Management Discussion and Analysis for business operation of quarter 2/2017 To The Manager and President The Stock Exchange of Thailand For 3 months

: President The Stock Exchange of Thailand CH. Karnchang Public Company Limited (“the Company”) and its subsidiaries would like to clarify the consolidated operating result and financial position for the year

. OCMSET1905/002 May 8, 2019 Subject: Report the operating result for the year ended March 31 ,2019 by more than 20 percent. Dear Director and Manager The Stock Exchange of Thailand According to the resolution

. OCMSET / 1905/002 May 8, 2019 Subject: Clarification of the operating results for the three-month period of 2019, change of rate more than 20 percent Dear Director and Manager the Stock Exchange of

31, 2019) To Director and Manager of the Stock Exchange of Thailand Ubis (Asia) Public Company Limited (“the Company”) would like to clarify on the performance and the financial status had varied over