the Stock Exchange of Thailand The Company would like to clarify the net profit for the 9-month periods of the year ending on 30th September 2018 had decreased more than 20% comparing to the same period

quarter 2/2017, the company reported sales revenue of Baht 4,826 million, decreased from quarter 2/2016 which the company reported sales revenue of Baht 4,844 million, mainly attributable to the lower sales

- ร่าง - 1 May 28, 2019 Subject Management Discussion and Analysis for the year ended 31st March 2019 To President of the Stock Exchange of Thailand Secretary of the Office of Securities and Exchange

Our Ref: No.V 040/2017 November 14,2017 Subject : Management Discussion and Analysis of 3rd Quarter Ending 30th September 2017 Attn: Managing Director The Stock Exchange of Thailand Enclosed please

November 14, 2017 Subject : Management Discussion and Analysis of 3rd quarter ended September 30, 2017 Attention : President The Stock Exchange of Thailand Operating Performance . Revenues Three

MATI 07/2561 February 27, 2018 Subject Consolidated Financial Report for the year which ended at December 31, 2017 To Director and Manager The Stock Exchange of Thailand Operating income of Matichon

No. INGRS026 13 June 2019 Subject : Explanation on 3-months financial performance of INGRS for the period ended 30 April 2019 To : The President The Stock Exchange of Thailand Ingress Industrial

Manager of the Stock Exchange of Thailand For the Q2/2019 period ended of June 30, 2019 (3 months) operating result of the company net loss Baht 6.47 Million comparison with the previous Q2/2018’s net loss

Ref. No. 111/2562 August 14, 2019 SUBJECT : Management Discussion and Analysis ending June 30, 2019 ATTN : The President Stock Exchange of Thailand The Company would like to clarify the operation

Our Ref: No.V. 027/ /2019 August 14,2019 Subject : Explanation for operation of second quarter of year 2019 Attn : Managing Director The Stock Exchange of Thailand Enclosed please find the financial