Risk Management Committee - APCS operates as a holding company through investment in subsidiaries of the following businesses – Precision Metal Parts, EPC / O&M, and Utilities.

Mrs. Ratana Anupasanant

• Chairman of the Risk Management Committee

• Master of Business Administration (MBA), University of Detroit, Michigan, USA.
• Bachelor of Law, Thammasat University.
• Bachelor of Business Administration, Thammasat University.
• Advanced Management Program (AMP171) Havard Business Scho

• Director Accreditation Program (DAP) รุ่น 123/2016, IOD
• Director Certification Program (DCP) รุ่น 224/2016, IOD

Name	Mrs. Ratana Anupasanant
Age	70 years
Position	Vice Chairman (appointed on 14 September 2022) กรรมการตรวจสอบ กรรมการสรรหาandค่าตอบแทน ประธานกรรมการบริหารความเสี่ยง กรรมการอิสระ
Educational Qualifications	Bachelor of Business Administration, Thammasat University Bachelor of Business Administration, Thammasat University Bachelor of Law, Thammasat University Master of Business Administration (MBA), University of Detroit, Michigan, USA . Graduate Diploma in Public Law, Thammasat University Advanced Management Program (AMP171) Havard Business School Havard University, USA International Management Program (IMP) Sloan School of Management Massachusetts Institute of Technology, USA Executive Development Program (EDP81) Kellogg School of Management Northwestern University, USA Advanced Executive Program (AEP120) Kellogg School of Management Northwestern University, USA
Certificate and Training Program	Director Accreditation Program (DAP123/2016), Thai Institute of Directors Director Certification Program (DCP224/2016), Thai Institute of Directors Ethical Leadership Program (ELP8/2017), Thai Institute of Directors Anti-Corruption : The Practical Guide (ACPG37/2017), Thai Institute of Directors Advanced Audit Committee Program (AACP26/2017), Thai Institute of Directors Role of the Chairman RCP41/2017), Thai Institute of Directors Board Matters and Trends (BMT4/2017), Thai Institute of Directors Risk Management Program for Corporate Leaders (RCL9/2017), Thai Institute of Directors Board that Make a Difference (BMD5/2017), Thai Institute of Directors Board Nomination and Compensation Program (BNCP3/2018), Thai Institute of Directors Financial Statements for Director (FSD35/2018), Thai Institute of Directors Driving Company Success with IT Governance (ITG7/2018), Thai Institute of Directors Strategic Board Master Class (SBM5/2018) Thai Institute of Directors Successful Formulation & Execution of Strategy (SFE31/2019), Thai Institute of Directors

Directorships in listed companies

(as of 31 December 2025)

Period

Position and Company

2022 – present

Vice Chairman of the Board / Audit Committee / Nomination and Remuneration Committee /

Chairman of the Risk Management Committee/ Independent Director

Asia Precision PLC.

2021 – present

Independent Director / Chairman of the Nomination and Remuneration Committee /

Risk Management Committee

Chaopraya Mahanakorn PLC.

Directorships in limited companies / other organisations
(as of 31 December 2025)

Period

Position and Company

2022 – present

Independent Director

A2 Engineering Solutions Co., Ltd

2012 – present

Special Instructor, Faculty of Law

Ramkhamhaeng University

2010 – present

Special Instructor, Faculty of Business Administration

Krirk University

2009 – present

Special Instructor, Faculty of Accountancy

Rangsit University

1997 – present

Special Instructor, Faculty of Commerce and Accountancy

Thammasat University

Work experience in the last 5 years
(as of 31 December 2025)

Period

Position and Company

2023

Special Instructor

Western University

2016 – 2025

Audit Committee / Independent Director / Chairman of the Nomination and Remuneration Committee

Techno Medical PCL

Directorships in listed companies: 2 companies and Directorships in non-listed companies: 5 companies

Directorships or executive positions in other companies that may cause a conflict of interest with the Company: None

Direct and indirect interests in any business in which the Company or its subsidiaries are a party: None

Family relationships among executives: None

Securities holdings in the Company as of 30 December 2025: None

M.R. Pumin Varavarn

• Risk Management Committee

• Heritage Management and Tourism Ph.D. Program, Silpakorn University.
• Master’’’’s Degree in Tourism Industry, Chiang Mai University.
• Bachelor’s degree in landscape architecture, Pomona Colle

• Director Accreditation Program (DAP), Class 230/2025, Thai Institute of Directors
• ESG in the Boardroom: A Practical Guide for Board Directors - Program 14

Name	M.R. Pumin Varavarn
Age	78 years
Position	Director (appointed on 23 April 2025) กรรมการบริหารความเสี่ยง กรรมการบริหาร
Educational Qualifications	Bachelor of Pomona, Landscape Architect, University Cal poly, Los Angeles, California Master’s Degree, Major in Tourism Industry, Chiang Mai University Ph.D. in Heritage Management and Tourism, Silpakorn University
Certificate and Training Program	Director Accreditation Program (DAP230/2025), Thai Institute of Directors

Directorships in listed companies
(as of 31 December 2025)

Period

Position and Company

2025 – present

Director / Risk Management Committee /Executive Committee

Asia Precision PLC.

Directorships in limited companies / other organisations
(as of 31 December 2025)

Period

Position and Company

2015 – present

Director

Bangkok City Development Co., Ltd.

2011 – present

Director

Bangna Asset Co., Ltd.

2007 – present

Director

Equity Residential (Riverside) Co., Ltd.

2004 – present

Director

I.T. E-Commerce Co., Ltd.

2015 – present

Instructor

Rangsit University

Directorships in listed companies: 1 company and Directorships in non-listed companies: 5 companies

Directorships or executive positions in other companies that may cause a conflict of interest with the Company: None

Direct and indirect interests in any business in which the Company or its subsidiaries are a party: None

Family relationships among executives: None

Securities holdings in the Company as of 30 December 2025: None

Mrs. Pimparuda Pitakteeratham

• Risk Management Committee

• Bachelor of Business Administration (International Program) Chulalongkorn University
• Master’’’’s degree MSc Management Cass Business School,

• Role of the Chairman Program (RCP) รุ่นที่ 56/2024
• Director Accreditation Program (DAP 185/2021)

Name	Mrs. Pimparuda Pitakteeratham
Age	42 years
Position	Director (appointed on 17 June 2022) กรรมการสรรหาandค่าตอบแทน กรรมการบริหารความเสี่ยง ประธานกรรมการบริหาร ประธานเจ้าหน้าที่บริหาร รักษาการกรรมการผู้จัดการ
Educational Qualifications	Bachelor of Business Administration, International Program, Chulalongkorn University Master of MSc Management, Cass Business School, United Kingdom
Certificate and Training Program	Role of the Chairman Program (RCP 56/2024), Thai Institute of Directors Director Accreditation Program (DAP 185/2021), Thai Institute of Directors

Directorships in listed companies
(as of 31 December 2025)

Period

Position and Company

2024 – present

Nomination and Remuneration Committee / Chairman of Executive Committee /

Chief Executive Officer / Acting Managing Director

Asia Precision PLC.

Directorships in limited companies / other organisations
(as of 31 December 2025)

Period

Position and Company

2024 – present

Chairman of the Board

RE Land Co., Ltd.

2023 – present

2016 – present

Chairman of the Board

Chairman of Executive Committee / Executive

A2 Technologies Co., Ltd.

2023 – present

Director / Chairman of Executive Committee / Executive

A2 Technologies Mongolia LLC.

2022 – present

Chairman of the Board / Executive

A2 Engineering Solutions Co., Ltd

2022 – present

Chairman of the Board / Executive

Green Energy Mining Co., Ltd.

2020 – present

Director / Executive

A2 Technologies Vietnam Co., Ltd.

2018 – present

Chairman of the Board / Executive

A2 Water Management Co., Ltd.

2017 – present

Chairman of the Board / Executive

Chonlakijsakol Co., Ltd.

2017 – present

Chairman of the Board / Chairman of Executive Committee / Executive

APCS Technologies Co., Ltd.

2016 – present

Director

AWS Asset Management Co., Ltd.

2016 – present

Director

Pro Solar One for Society Co., Ltd.

2016 - present

Director

Advance Web Studio Co., Ltd.

Work experience in the last 5 years
(as of 31 December 2025)

Period	Position and Company
2023 – 2024	Acting Chief Executive Officer
2023 – 2024	Managing Director Asia Precision PLC.
2016 – 2023	Director A2 Technologies Co., Ltd.

Directorships in listed companies: 1 company and Directorships in non-listed companies: 12 companies

Directorships or executive positions in other companies that may cause a conflict of interest with the Company: None

Direct and indirect interests in any business in which the Company or its subsidiaries are a party: None

Family relationships among executives: None

Securities holdings in the Company as of 30 December 2025: 852,400¹⁾ ordinary shares, representing 0.13% of the total issued shares of the Company (Note: Shareholding figures include shares held by spouse and minor children.)

Mr. Suriyon Udcharchon

• Risk Management Committee

• Bachelor of Engineering Electrical Engineering Chiang Mai University
• Master of Science Program in Smart Grid Technology

• Director Accreditation Progra (DAP) (DAP162/2019)

Name	Mr. Suriyon Udcharchon
Age	59 years
Position	Director (appointed on 26 February 2018) กรรมการบริหารความเสี่ยง กรรมการบริหาร ผู้บริหารสูงสุดสายงานธุรกิจบริการทางวิศวกรรมandก่อสร้าง (EPC)
Educational Qualifications	Bachelor of Engineering, Major Electronic Engineering, Chiang Mai University Master of Science, Major Smart Grid Technology, School of Renewable Energy and Smart Grid Technology, Naresuan University
Certificate and Training Program	Directors Accreditation Program (DAP) 162/2019 Thai Institute of Directors Strategic Board Master Class (SBM) 15/2024 Thai Institute of Directors

Directorships in listed companies
(as of 31 December 2025)

Period

Position and Company

2018 – present

Director / Risk Management Committee /Executive Committee /

Chief Executive Officer - EPC

Asia Precision PLC.

Directorships in limited companies / other organisations
(as of 31 December 2025)

Period

Position and Company

2025 – present

Director

Thai Renewable Energy (RE100) Association

2023 – present

Director / Executive Committee / Executive

A2 Technologies Mongolia LLC

2022 – present

Executive

A2 Engineering Solutions Co., Ltd

2020 – present

Director

Chonlakijsakol Co., Ltd.

2020 – present

Executive

A2 Technologies Vietnam Co., Ltd.

2018 – present

Director / Executive

A2 Water Management Co., Ltd.

2017 – present

Director / Executive Committee / Executive

APCS Technologies Co., Ltd.

2016 – present

Director / Executive Committee / Executive

A2 Technologies Co., Ltd.

Directorships in listed companies: 1 company and Directorships in non-listed companies: 8 companies

Directorships or executive positions in other companies that may cause a conflict of interest with the Company: None

Direct and indirect interests in any business in which the Company or its subsidiaries are a party: None

Family relationships among executives: None

Securities holdings in the Company as of 30 December 2025: None

Mr. Prasit Hanpiyavatanasakul

• Risk Management Committee

• Bachelor of Accounting, University of the Thai Chamber of Commerce

• Directors Accreditation Program (DAP 168 / 2020)
• Chief Finance Officer in Practice Program Class 9/2019
• Data privacy law and cyber security (2020)
• How to create value with the right environment, social and 2563governance strategies (2

Name	Mr. Prasit Hanpiyavatanasakul
Age	54 years
Position	Director (appointed on 15 March 2022) กรรมการบริหารความเสี่ยง กรรมการบริหาร ผู้บริหารสูงสุดกลุ่มบัญชี การเงินandสนับสนุนธุรกิจ ผู้บริหารสูงสุดสายงานธุรกิจสินทรัพย์ดิจิทัล
Educational Qualifications	Bachelor of Accountancy, 2nd class honors, University of the Thai Chamber of Commerce
Certificate and Training Program	Chief Financial Officer in Practice Program 9/2019 Boardroom Success through Financing & Investment (BFI) 9/2020, Thai Institute of Directors Directors Accreditation Program (DAP) 168/2020, Thai Institute of Directors Company Secretary Program (CSP) 124/2021, Thai Institute of Directors The Board’s Role in Mergers and Acquisitions (BMA) 2/2022, Thai Institute of Directors Corporate Governance for Executives (CGE) 21/2023, Thai Institute of Directors Strategic Board Master Class 14/2024, Thai Institute of Directors Director Accreditation (DAP) Class 230/2025 ESG Scholarship 2025: Principles of Environmental, Social and Governance and Sustainability Reporting Standards

Directorships in listed companies
(as of 31 December 2025)

Period

Position and Company

2023 – present

Director / Risk Management Committee / Executive Committee / Chief Finance Officer /

Chief Executive Officer - Digital Assets Company Secretary

Asia Precision PLC.

Directorships in limited companies / other organisations
(as of 31 December 2025)

Period

Position and Company

2023 – present

Director / Executive Committee Executive

A2 Technologies Mongolia LLC

2022 – present

Director

A2 Engineering Solutions Co., Ltd

2022 – present

Director / Executive

Green Energy Mining Co., Ltd.

2022 – present

Director

Chonlakijsakol Co., Ltd.

2021 – present

Director / Executive Committee / Company Secretary /Executive

A2 Technologies Co., Ltd.

Work experience in the last 5 years
(as of 31 December 2025)

Period

Position and Company

2019 – 2021

Director/ Executive Committee / Executive (AVP Finance and Account)Director/ Executive

Unimit Engineering PCL

Directorships in listed companies: 1 company and Directorships in non-listed companies: 5 companies

Directorships or executive positions in other companies that may cause a conflict of interest with the Company: None

Direct and indirect interests in any business in which the Company or its subsidiaries are a party: None

Family relationships among executives: None

Securities holdings in the Company as of 30 December 2025: None

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