May 15, 2019 Subject : Management Discussion and Analysis for quarter ended March 31, 2019 Attention : President The Stock Exchange of Thailand 1. Operating Performance 1.1 Revenues Consolidated

Company Limited (“the Company”) would like to inform that the Board of Directors of the Company no. 6/2019 held on July 5, 2019, has approved Total Industrial Services Company Limited (“TISCOM”) (a

subsidiaries herewith submit the clarification of the Company’s operating performance for the 2nd quarter of the year 2019, as at 30 June 2019 as follows: 1. Consolidated Financial Statement (6 month) In the 2nd

May 12, 2018 Subject : Management Discussion and Analysis for quarter ended March 31, 2018 Attention : President The Stock Exchange of Thailand 1. Operating Performance . Revenues (Thousands Baht

Microsoft Word - E05-2561 Registration number No.0107537001056 Date: May 14, 2018. Subject: CPH Management Discussion and Analysis on operating results for Q1/2018 ended March 31, 2018. To: President

subsidiaries herewith submit the clarification of the Company’s operating performance for the 2nd quarter of the year 2018, as at 30 June 2018 as follows: 1. Consolidated Financial Statement (6 month) In the 2nd

November 13,2019 Dear Director and The Manager of SET Re: Operating Performance’s Summary of Q3/2019 During the third quarter of 2019, total sales amount of the Company was 27 6.71 million baht. It

May 15, 2020 Subject : Management Discussion and Analysis for 1st quarter ended March 31, 2020 Attention : President The Stock Exchange of Thailand 1. Operating Performance 1.1 Revenues Consolidated

of 99.77%. The Company would like to clarify significant changes in the Group’s operating results as follows: 1. Revenues from sales and services for the six-month period of 2020 total of Baht 32.68

-2022 Balance by Quarter Change Topic Q1-22 Q4-21 Q1-21 Q1-22 VS Q4-21 Q1-22 VS Q1-21 (Million Baht: MB) (MB) % (MB) % Total revenue 1,399.2 1,620.3 1,824.2 (221.1) (13.6) (425.0) (23.3) Total operating