Yunwu Li has served as a member of our board of directors since November 2016, as chairman of our board of directors since January 2020, as our chief executive officer since September 2019, and as chairman of the board of directors and general manager of Shenzhen CDT Environmental Technology Co., Ltd., our subsidiary, since June 2015. From 1987 to 1996, Mr. Li served as general manager of Fujian Optical Instrument Co., Ltd., a company that specializes in manufacture of optical instruments, and has extensive management experience in the research and development, manufacture, and processing of optical instruments, communicational devices, and environmental protection equipment. From July 1999 to November 2003, Mr. Li served as chairman of the board of directors of Fujian Furi Electronics Co., Ltd. (Ticker: 600203), a company listed on the Shanghai Stock Exchange that specializes in manufacture and sales of electronic components. During his term of service, Mr. Li obtained extensive experience in general management, investments and operations. From March 2007 to May 2015, Mr. Li served as chairman of the board of directors and general manager of Beijing Xinyuan Shidai Real Estate Development Co., Ltd., a company that develops and manages large scale real estate projects in China. During such time, Mr. Li was also involved in the investment in, and served as a consultant to, environmental protection companies. From March 2013 to May 2015, Mr. Li served as a consultant to Shenzhen CDT Environmental Technology Co., Ltd. Mr. Li is also the director of CDT Environmental Technology Holdings Limited, one of our principal shareholders. Mr. Li received a MBA degree from The Open University of Hong Kong. We believe Mr. Li’s extensive experience qualifies him to serve on our board of directors.

Tiefeng Wang has served as our chief financial officer since November 2019. From January 2010 to July 2012, Mr. Wang served as an investment manager of Zhejiang Feida Environmental Science & Technology Co., Ltd. (Ticker: 600526), a company listed on the Shanghai Stock Exchange that specializes in emission control. From August 2012 to May 2015, Mr. Wang served as an audit manager of Zhejiang Weining Asset Appraisal Office. From May 2015 to November 2019, Mr. Wang served as a financial controller of Xingyuan Environment Technology Co., Ltd. (Ticker: 300266), a company listed on the Growth Enterprise Market of the Shenzhen Stock Exchange that specializes in comprehensive environmental services. Mr. Wang is a certified public accountant in China. Mr. Wang received a Bachelor’s Degree in Industry and Business Administration from Hebei University of Geosciences. 

Zijiang Liu has served as our chief technology officer and vice president since September 2019 and as chief technology officer and vice president of septic tank treatment of Shenzhen CDT Environmental Technology Co., Ltd. since November 2015. From April 2006 to November 2015, Mr. Liu served as Engineer of Volvo (China) Investment Co., Ltd., a company that specializes in manufacture of automobiles and engines, where Mr. Liu was responsible for the design and modification of equipment to meet market demand. Mr. Liu has profound theoretical knowledge and practical experience in mechanical structure design, quality analysis and solutions. Mr. Liu received a Bachelor’s Degree in Automotive Design from Xi'an Highway Communication University.

Jianfei Yu has served as our vice president since September 2019 and as the vice president of rural sewage treatment of Shenzhen CDT Environmental Technology Co., Ltd. since November 2017. Mr. Yu has over 10 years of experience serving in various roles at environmental protection companies. From January 2016 to June 2017, Mr. Yu served as general manager and chief engineer of Jinhua Shunhong Environmental Protection Technology Co., Ltd., an environmental protection company. From June 2007 to April 2015, Mr. Yu served multiple roles in four environmental protection companies, including as general manager and chief engineer of Jinhua Juchuan Environmental Protection Technology Co., Ltd., engineering manager of Zhejiang Liuyuan Environmental Technology Co., Ltd., project manager of Lvdi Environmental Technology Co, Ltd., and technological director of Tongkun Group Co., Ltd. Mr. Yu has extensive experience in project management and implementation, including early-stage negotiation, composition of project proposals, design of construction drawing, design of non-standard equipment, instruction of manufacture and installation of equipment, and testing and commissioning of equipment. Mr. Yu received a Bachelor’s Degree in Environmental Engineering from Sanxia University.

Yuntao Guan has served as our chief scientist since September 2019 and as a consultant to Shenzhen CDT Environmental Technology Co., Ltd. since January 2019. Mr. Guan has also served as professor, doctoral supervisor and director of the Institute of Environment of Shenzhen Graduate School of Tsinghua University since December 2010. Mr. Guan has not only accomplished breakthroughs in quick separation technology, but has also conducted research of other water treatment technologies, such as MBR. Mr. Guan is also the vice director of the National Environmental Protection Environmental Microorganisms Usage and Safety Control Key Lab and the director of Municipal Water Circulation and Water Environment Safety Assurance Engineering and Technology Research Center of Guangdong Province. Additionally, Mr. Guan is a part-time professor at The Queensland University of Technology in Australia and was a guest professor at Kyoto University in Japan. Mr. Guan focuses on the research of theory and technology of integrated governance and treatment of water environment, distributed wastewater treatment in rural and urban areas, non-point source pollution control, and soil recovery, and he has published over 200 academic papers on industry magazines and journals both in China and abroad. Mr. Guan was in charge of and/or participated in several water-related projects and research projects that were national, provincial and municipal level material water projects. Mr. Guan received a Ph.D. in Environmental Science and Engineering from the Department of Environment, Tsinghua University.

Lijun Cui has served as a member of our board of directors since January 2020 and as general manager of Shenzhen CDT Environmental Technology Co., Ltd. since November 2017. From August 2013 to October 2016, Mr. Cui served as general manager of Zhejiang Yong Er Jia Environmental and Technology Co., Ltd., a company that specializes in food waste treatment equipment. Mr. Cui received a Bachelor’s Degree in Business Administration from Jiangxi Normal University. We believe Mr. Cui’s extensive experience qualifies him to serve on our board of directors.

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