Board of Directors
Board of Directors
Promote our green vision
Mr. Mansfield Wong
Co-founder, Chairman and CEO



Mr. Mansfield Wong has over 25 years of experience in Greentech Solutions, including energy saving, renewable energy, energy storage as well as carbon neutrality. He co-founded Unity Group in 2008. He is primarily responsible for the overall corporate strategy, development and operations of the Group. Mansfield holds a Bachelor's degree in Electrical Engineering from the University of Arizona and a Master of Engineering (Electrical) from Cornell University.
Mr. Chung Koon Yan
Independent Non-Executive Directors



Mr. Chung is an independent non-executive Director, the Chairman of the Audit Committee, member of the Remuneration Committee and member of the Nomination Committee of the Company since 5 March 2015. He is a practicing and fellow member of The Hong Kong Institute of Certified Public Accountants, a fellow member of The Association of Chartered Certified Accountants and a fellow member of The Institute of Chartered Accountants in England and Wales. He graduated from the Hong Kong Polytechnic University with a Master’s Degree in Professional Accounting in November 2000. Mr. Chung obtained the fellow membership of The Association of Chartered Certified Accountants in October 2003 and became a member of The Hong Kong Institute of Certified Public Accountants in October 1998, and was also admitted as an associate of The Institute of Chartered Accountants in England and Wales in October 2004. Mr. Chung is a director of Chiu, Choy & Chung CPA Ltd. and Dickson Wong C.P.A. Company Limited, and has more than 27 years’ experience in accounting, auditing and taxation. Mr. Chung has been an independent non-executive director of Great World Company Holdings Limited (stock code: 8003), the shares of which are listed on the GEM operated by the Stock Exchange since May 2008, and an independent non-executive director of Winson Holdings Hong Kong Limited (stock code: 6812), the shares of which are listed on the Main Board of the Stock Exchange (transfer of listing of its shares from GEM to Main Board on 11 June 2020) since February 2017. From November 2013 to June 2021, Mr. Chung served as an independent non-executive director of Asian Citrus Holdings Limited (stock code: 73), the shares of which are listed on the Main Board of the Stock Exchange.
Mr. Cheung Yick Hung Jackie
Independent Non-Executive Directors



Mr. Cheung is an independent non-executive Director, the Chairman of the Remuneration Committee, member of the Audit Committee and member of the Nomination Committee of the Company since 5 March 2015. Mr. Cheung has been a representative of KGI Asia Limited and KGI Futures (Hong Kong) Limited which carry out Type 1 (dealing in securities) and Type 2 (dealing in futures contracts) regulated activities under the SFO respectively from 29 March 2011 to 31 July 2020. He currently serves as a Consultant Solicitor of Messrs. Cheung, Yeung and Lee, Solicitors. Mr. Cheung was admitted as a solicitor to the High Court of Hong Kong in November 1995 and as a solicitor of the Supreme Court of England and Wales in May 1997. He graduated from City Polytechnic of Hong Kong (now known as City University of Hong Kong) with a degree of Bachelor of Laws and obtained the Postgraduate Certificate in Laws in November 1992 and November 1993 respectively. Mr. Cheung served as a District Councillor of the Central and Western District Council for the period from 1 January 2008 to 31 December 2015.
Dr. Wong Chi Ying Anthony
Independent Non-Executive Directors



Dr. Wong is an independent non-executive Director, member of the Audit Committee and member of the Remuneration Committee of the Company since 5 March 2015. From 5 March 2015 to 26 April 2022, he was the Chairman of the Nomination Committee of the Company and serves as the Co- Chairman of the Nomination Committee since 26 April 2022. Dr. Wong was an Associate Professor in the Department of Industrial and Manufacturing Systems Engineering of The University of Hong Kong from 1997 to 2006. He obtained a B.Tech (Hons) degree and a Ph.D degree in Chemical Engineering from The University of Bradford, United Kingdom, in December 1980 and in December 1983 respectively. Dr. Wong was a Corporate Member of The Institution of Chemical Engineers (MIChemE) from November 1999 to January 2022 and a Chartered Engineer (C.Eng) of the Engineering Council of the United Kingdom from December 1999 to January 2022. During the period from 1 June 2004 to 29 January 2022, he was a Chartered Scientist (CSci) of The Institution of Chemical Engineers and The Science Council of the United Kingdom. He was also admitted as a member of The Hong Kong Institution of Engineers during the period from 16 March 2000 to April 2022. From April 2003 to November 2018, he served as the vice chairman and an executive director of Ngai Hing Hong Company Limited (stock code: 1047), a company listed on the Stock Exchange, and was in charge of its research and development centre and responsible for its business development and remained in such company as a consultant subsequent to his cessation from the positions mentioned above until 31 March 2019.
Mr. Tang Warren Louis
Independent Non-Executive Directors



Mr. Tang is an independent non-executive Director and Co-Chairman of the Nomination Committee of the Company since 26 April 2022. Mr. Tang was graduated from the University of Toronto in June 1998 with a bachelor of applied science major in computer engineering. He obtained the postgraduate diploma in English and Hong Kong law from Manchester Metropolitan University in July 2000 and the postgraduate certificate in laws from The University of Hong Kong in June 2001. Mr. Tang was called to the Bar of Hong Kong in the High Court of Hong Kong in December 2001 and since then has been a practising barrister and a member of the Hong Kong Bar Association. Mr. Tang served as an independent non-executive director of Global International Credit Group Limited (stock code: 1669) from 22 November 2014 to 1 January 2024. He was also an independent non-executive director of Elegance Optical International Holdings Limited (stock code: 907), from 15 July 2019 to 31 December 2019. Mr. Tang has been a fellow member of the Hong Kong Institute of Arbitrators since 2019 and an arbitrator of the Guangzhou Arbitration Commission since 2020. In 2019 and August 2022, Mr. Tang was appointed as a deputy magistrate in Hong Kong at the West Kowloon Magistrates’ Courts. In 2020, Mr. Tang was appointed as a deputy magistrate in Hong Kong at the Kowloon City Magistrates' Courts.
Mr. Tsang Sze Wai Claudius
Non-Executive Directors



Mr. Tsang has been a nonexecutive Director of the Company since December 2022. He has over 20 years of experience in capital markets, with a strong track record of success in Special Purpose Acquisition Company (“SPAC”), private equity, M&A transactions and PIPE investments. Since 2021, Mr. Tsang has served as the chief executive officer and Chairman of Model Performance Acquisition Corp (Nasdaq: MPAC) and A SPAC I Acquisition Corp (Nasdaq: ASCA). He also successfully listed A SPAC II Acquisition Corp (Nasdaq: ASCB) as chief executive officer. From 2008 to 2020, Mr. Tsang worked at Templeton Asset Management Ltd. He was co-head of private equity, North Asia and a partner of Templeton Private Equity Partners, a leading global emerging markets private equity firm that is part of Franklin Templeton Investments. During his career at Templeton, Mr. Tsang served in various positions, including partner, senior executive director and vice president and was responsible for the overall investment, management and operation activities of Templeton Private Equity Partners in North Asia. His role encompassed overseeing the analysis and evaluation of opportunities for strategic equity investment in Asia, including China, Hong Kong and Taiwan. During his tenure, Mr. Tsang managed US$1 billion in private equity funds, with approximately 50 portfolio companies. He was involved in the management of a US$3 billion fund, which was the largest Central Eastern European listed closed-end fund at the time of IPO in London. From 2007 to 2008, Mr. Tsang also worked at Lehman Brothers, where he managed private equity projects in Hong Kong, China, Taiwan and the United States. At Lehman Brothers, Mr. Tsang managed US$500 million proprietary funds.

Mr. Tsang obtained his MBA from The University of Chicago Booth School of Business in 2017, the second Bachelor degree of Law from Tsinghua University in 2005, and a Bachelor degree of Engineering from the Chinese University of Hong Kong in 1998. He is a charter holder of Chartered Financial Analyst from the CFA Institute. He obtained Postgraduate Certificate in Sustainable Business from the University Of Cambridge Institute Of Sustainability Leadership in June 2023.
Ms. Cai Linda Xin Xin
Independent Non-Executive Directors



Ms. Cai is the spouse of Mr. Wong Man Fai Mansfield, the Company’s Chairman, executive director, chief executive officer and substantial shareholder, is appointed as a non-executive Director of the Company with effect from 31 July 2024. She has over 10 years of experience working in investment banking, private equity, hedge fund, and long-only investment funds. She started her career as an investment banking analyst at Goldman Sach’s Technology, Media, & Telecom Group in San Francisco and most recently worked at Hong Kong based Multi-Strategy Fund, LIM Advisors. Ms. Cai has extensive experience in IPO, private equity, real estate across multiple asset classes. Ms. Cai completed Harvard Business School's Sustainable Investing Diploma in December 2022. She holds double degrees in Business Administration and Economics from the University of California, Berkeley.