Beijing Longdian Electronic Equipment Co., Ltd. is a large-scale enterprise specializing in research and development, production, sales, and after-sales service.Professional electronic equipment company. Mainly engaged in the production and business of high-tech electronic products such as library automation management systems, library self-service borrowing and returning systems, library sterilization and disinfection systems, and library anti-theft detection systems. Among them, the library self-service borrowing and returning system is particularly welcomed by public libraries and schools, with positive feedback.