Mr. Cheng Bing is primarily in charge of overseeing the operation and management of the major third-party e-commerce platforms of our Group. He graduated with a bachelor's degree in chemistry from Anqing Normal Institute in July 2010 and graduated with a master's degree in industrial catalysis from East China University of Science and Technology in March 2013. Mr. Cheng joined our Group in April 2015 and has been the general manager of business department of our Group, primarily responsible for the management of sales and marketing through third-party e-commerce platforms on Amazon and Wish. Prior to joining our Group, he served as a product engineer of Atotech (China) Chemical. Mr. Cheng was appointed as sales director of our Company on June 18, 2021.