Company’s operating cost in an amount of 10.15 million Baht in the previous year. Products of the Company: For Medical Devices Segment; The sales rise from the previous year although there is effected by

-1- AIT (VP-SEC) 014E/2023 May 8, 2023 Subject: Management's Discussion and Analysis of Operating Results for Q1-2023 To: The President of the Stock Exchange of Thailand Summary of Operations Q1-2023

.์ -4332-7776 E-mail: kcmetalsheet@hotmail.com Website: www.kcmetalsheet.co.th No. KCM61/005 March 28, 2018 Subject Clarification of operating result for the year 2017 ended December 31, 2017 (Edit

No.012/2018 May 09, 2018 Subject: Report the operating result for the 1st Quarter ended March 31, 2018 and the explanation for the causes of change more than 20% in the Company’s performance To: The

- Translation - Ref : LPH/SET 2018/014 May 11, 2018 Subject : Clarification on the Operating Results for the three-month period ended March 31, 2017 (Q1/2017) To : President The Stock Exchange of

Baht 7.18 million, a decline of 2,453.53%. The Company would like to clarify significant changes in the Group’s operating results as follows: 1. Revenues from sales and services for the year 2018

Limited would like to report the operating results and submit the auditor's report and financial statements for the year ended 31 December, 2018 of the company as follows: The company’s operating results

Ref Ref. 2S_BoD017/2019 November 13th, 2019 Subject: Clarification of the change in operating result more than 20% To : The president The Stock Exchange of Thailand The Board of Directors’ meeting of

%) Operating expenses 140,676 159,411 (11.8%) Finance costs - Interest expense 6,969 2,398 190.6% Net loss 159,760 2,679 5,863.4% Revenue from the hotel income for the third quarter ended 30 September 2019

Company Limited would like to report the operating results, and submit the auditor's report with financial statements for the year ended 31 December 2019 of the company as follows: Company performance for