Yin: Male, born in 1972, China nationality, with no permanent residency abroad, graduated from Mengyang Senior High School in Chengdu, Sichuan. Mr. Yin has served as technician, section chief and workshop deputy director of Sichuan Electric Wire Rod Factory. Mr. Yin joined the Company at the beginning of its establishment in February 2002 as the manager and deputy general manager of the technical department of the Company. Through more than ten years of accumulated project implementation experience and continuous self-study and research, Mr. Yin has his own unique views on the functional framework, application implementation, customer training and technical support of software products in the coal industry, and has created a model of demonstration and customer training with the characteristics of Longruan, which has played a key role in the company's business development and customer relationship maintenance. He is currently the deputy general manager of the company, mainly responsible for the company's technical support, customer training, after-sales service and project management.