May 15, 2018 Subject: Managing Discussion and Analysis for Q1/2018 To: Managing Director The Stock Exchange of Thailand The company would like to report to operation results for the company and

, please kindly find the following attachment. Please kindly be informed accordingly. Yours faithfully, Mr. Geza Emil Perlaki Managing Director For period ended 31 December 2017 MANAGEMENT DISCUSSION AND

Managing Director said: “We have improved our safety record in Q2 of 2019 after three lost time injuries in Q1 which results from a relentless focus from every employee. We will maintain this focus for the

operating results of the Company and its subsidiary, please kindly find the following attachment. Please kindly be informed accordingly. Yours faithfully, Mr. Geza Emil Perlaki Managing Director For period

Microsoft Word - Operating Result for the year of 2018 SBN 001/2019 February 20, 2019 Subject : Operating Result of the year 2018 To : The Managing Director, the Stock Exchange of Thailand Sabina

proper product management and effective resulting in reduced cost of sales. Yours Sincerely, Mr. Perapol Suwannapasri Managing Director

accordingly. Sincerely yours, Miss Parnbua Boonparn Managing Director

expansion of subsidiaries, staff cost and expenses of hospital quality improvement. Please be informed accordingly. Sincerely yours, (Mr Pongpat Patanavanich) Managing Director

company will continue to seek stability, safety and consider to all interested persons. Sincerely Yours, Mr.Thakoon Boonparn Managing Director

are expecting good results from the fourth quarter of 2017 onwards. Sincerely Yours, Mr.Thakoon Boonparn Managing Director