-Translation- 1 -Translation- Ref. NCH 008/2020 February 28, 2020 Subject: Management Discussion and Analysis Yearly Ending 31 Dec 2019 Attention: President The Stock Exchange of Thailand N.C

No. CC20200204ELE February 28, 2020 Re: Clarification of the changes in operation performance for the year ended 31 December 2019 Attn: The President The Stock Exchange of Thailand Cal-Comp

The Stock Exchange of Thailand The Board of Directors Meeting of O.C.C. Public Company Limited No. 5/2560 held on August 8, 2017 had resolved to approve investment in capital increase shares of

1/2 RC 040/17 9 August 2017 Subj. : Report on the Company’s operating results for the second quarter of the year 2017 To : President of the Stock Exchange of Thailand Encl. : 1) A copy of financial

quarter of 2017 Attention: The President The Stock Exchange of Thailand The Company wishes to present the Management Discussion & Analysis (MD&A) on the operating and financial status for the 2nd quarter of

MMS-AC60/029 9 August 2017 Subject: Discussion and analysis of the operating results for the second quarter of 2017, ending 30 June 2017 To: The President of the Stock Exchange of Thailand Matching

) August 9, 2017 Re : Report the operating result for the year ended June 30 ,2017 by more than 20 percent. To : Director and Manager the Stock Exchange of Thailand Approved by the Board of Directors of

: President of the Stock Exchange of Thailand Enclosures : 1) A copy of financial report and consolidated financial statements 2) A summary of the operating results of the listed company and subsidiaries of the

10 August 2017 Re Explanation and analysis of the Management for the 2nd quarter of 2017 ended 30 June 2017 To Director and Manager, Stock Exchange of Thailand Whereas the Meeting No. 3/2560 of the

performance for 3-month period ended June 30, 2017. To Managing Director The Stock Exchange of Thailand The Operating results of the company and its subsidiaries for the 3-month period ended June 30, 2017 as in