Weiping Ma

Dr. Weiping Ma has been serving as our independent director since March 2023. He has over 30 years of management and technical experience
in the building materials industry in both the United States of America and China. Dr. Ma has been serving as an executive director and the chief
executive officer of West China Cement Limited, a company listed on the Hong Kong Stock Exchange (stock code: 2233), since February 2015. Dr. Ma
served as senior process engineer and held several management positions for Holcim in Michigan, United States from 1996 to 2002. He served as vice
president of marketing and sales for Lafarge (China) in Beijing from 2002 to 2005 and served in a similar position for Lafarge Shuion Cement from
2005 to 2008. Dr. Ma served as general manager and vice president for Lafarge A&C in China from 2008 to 2009. He was the managing director of
Fuping Cement, a company wholly owned by Italcementi Group, from 2009 to 2012. Dr. Ma was the Chief Representative and Country Manager in
China for the Italcementi Group from 2009 to 2014.

Dr. Ma received a bachelor’s degree in Inorganic and Non-Metallic Materials from Tongji University in 1982, a master’s degree in Solid State
Science and a Ph.D in Materials from Pennsylvania State University in 1991 and 1994, respectively. Dr. Ma also obtained a Master of Business
Administration in Integration Management from Michigan State University in 2002.