Founder and Chief Executive Officer

Mr. Long Chen is our founder, chairman of the board of directors, and chief executive officer. He has served in these roles since our inception. Mr. Chen is in charge of our overall strategy formation and management, operations, product development and research development. Mr.Chen received an executive MBA degree from China Europe International Business School in 2023.

Vice President

Mr. Changxiang Yang has served as our director since December 2021. Mr. Yang has served as our vice president since December 2018. Mr. Yang joined us since our inception and served multiple positions in our company since then. Prior to that, Mr. Yang served as a sales manager at Shanghai Athan Industrial Co., Ltd. from May 2011 to February 2012 and a sales manager at EHSY from December 2007 to May 2011. Mr. Yang received a bachelor’s degree in electronic information engineering from Nanjing University of Science and Technology in 2007.

Chief Technology Officer

Mr. Yang Liu has served as our director since August 2024. Mr. Liu has served as our chief technology officer since April 2023 and has extensive experience in technical management. Prior to joining us, Mr. Liu served as a general manager at Alibaba (Beijing) Software Services Co., Ltd. from October 2014 to March 2023, where he oversaw the business unit covering e-commerce, cloud-computing and digital media. Mr. Liu served as a senior technical product manager at Lenovo (Beijing) Co., Ltd. from March 2011 to October 2014 and a technical architect at Amlogic (Shanghai) Co., Ltd. (SHA: 688099) from December 2007 to February 2011. Mr. Liu received a bachelor’s degree in computer science and technology from Beijing University of Posts and Telecommunications in 2005 and a master’s degree in computer science and technology from Tsinghua University in 2007.

Chief Financial Officer

Mr. Chun Chiu Lai has served as our chief financial officer since February 2022. Prior to joining us, from April 2014 to June 2021, Mr. Lai worked at China International Capital Corporation Hong Kong Securities Limited, with his last position being an executive director in the investment banking division, advising clients on initial public offerings, mergers and acquisitions and other strategic transactions. Mr. Lai received a bachelor’s degree in business administration from Hong Kong University of Science and Technology in 2008 and a master’s degree from the University of Nottingham in 2010.

Vice President

Dr. Shuang Liu has served as our vice president since April 2022, in charge of the daily operation and management of our regional service centers. Prior to joining us, Dr. Liu has served as the co-founder and vice president of China State Science Dingshi Environmental Engineering Co., Ltd from 2010 to 2022, building up a wealth of experience in sales and procurement. Dr. Liu received her bachelor’s degree in plant protection from Jilin Agricultural University in 2003 and master’s degree in plant protection from Fujian Agricultural and Forestry University in 2006. Dr. Liu graduated with a Ph.D. in environmental science from Chinese Academy of Sciences in 2010. Dr. Liu conducted her postdoctoral research at Tsinghua University.

Chief Human Resources Officer

Mr. Yunjie Han has served as our director since August 2025. Mr. Han has served as the chief human resources officer of the Company since June 2024. He brings extensive experience in human resources and corporate management across diverse industries. Prior to joining the Company, he served as general manager of the human resources center at KUKA Home Co., Ltd. from November 2021 to June 2024. Before that, Mr. Han served as general manager of both the human resources department and the corporate management department at HNA Group (International) Co., Ltd. from March 2017 to October 2021. Earlier in his career, he held the position of human resources director at ZTE Corporation from August 2009 to February 2017. Mr. Han received his bachelor’s degree in human resources management from Shanghai Jiao Tong University in 2006.