日昌科技是一间集生产、销售、服务为一体的科技公司，主产品有智能门锁、软件开发、智能卡读写设备，以及“一卡通”系统工程的开发与应用。我们本着创新的精神，专为客户研发更新、更人性化的产品。 **的售后服务 售后服务的质量直接影响到旅业的正常运营及运行，我司配备了**的跟踪服务体系，包括咨询、系统配套、安装调试、人员培训、系统维护、软件升级等，一切都为消费者提供放心、满意的服务作可靠的保障。   Ri Chang Science is a i-tech company integrating production,sales and services. Our main products include intelligent entrance-lick,software development,IC cad reading equipment and integrated IC card system.We strive to develop edgy and customized products to our customers. Professional After-sales Service After-sales service is vital to the operation and reputation of hospitality industry.As an experienced company that has endured different challenges,we are armed with professional after-sales services which include consultation, supportion system,installation testiong,staff training,system mailteance,software upgrade,etc.guaranteeing quality and satisfying services for consumers.