resolution of the Board of Director Meeting No. 7/2018, held on August 6th, 2018 of Hwa Fong Rubber (Thailand) Public Company Limited. that approved renew the Technical Cooperation Agreement between Hwa Fong

the resolution of the Board of Director Meeting No. 7/2018, held on August 6th, 2018 of Hwa Fong Rubber (Thailand) Public Company Limited. that approved renew the Technical Cooperation Agreement between

1 - Translation – Bor.Chor.Ngor 0328/2017 September 26, 2017 Subject: Connected transaction : Renewal of a hotel management advisor agreement Attn : President The Stock Exchange of Thailand With

รายงานการประชุมคณะกรรมการตรวจสอบ ครั้งที่ 4/2548 Ref.: SET-2018-003 February 14, 2018 Subject: Signing on the Franchise Agreement; and the Agreement to Acquire and Dispose Assets of “Wuttisak Clinic

รายงานการประชุมคณะกรรมการตรวจสอบ ครั้งที่ 4/2548 Ref.: SET-2018-003 February 14, 2018 Subject: Additional Disclosure “Signing on the Franchise Agreement; and the Agreement to Acquire and Dispose

ที่ กตพ Ref. DBP. 080 / 2018 May 31, 2018 Subject : Connected Transaction in Respect of Office Lease Agreement Extension To : President The Stock Exchange of Thailand Diamond Building Products Public

upon the SEC Office’s request. I allow and will facilitate the SEC Office’s inspection of audit quality of my own work and audit quality control system of the audit firm, both before and throughout the

AQIs ) 1 % 2564 2563 1 (Leadership Responsibilities for Quality within the Firm) ( ) (1) 2 (Relevant Ethical Requirements) ( ) (3) 3 (Acceptance and Continuance of Client Relationships and Specific

2562 1 (Leadership Responsibilities for Quality within the Firm) ( ) (2) 2 (Relevant Ethical Requirements) ( ) ( ) 3 (Acceptance and Continuance of Client Relationships and Specific Engagements) (1) (3

Responsibilities for Quality within the Firm) ( ) (1) 2 (Relevant Ethical Requirements) ( ) (2) 3 (Acceptance and Continuance of Client Relationships and Specific Engagements) (1) (1) 4 (Human Resources) ( ) ( ) 5