Derby software connection services as the core, development of the business. joint business through the integration of different systems and docking, real-time data exchange, orders after the election, the Derby software order charge. the Derby software at the same time providing a channel for the hotel management system and network marketing, increasing cooperation, DHotelier provides independent hotel Web site support and channel management system, DCRS website provides hotel chains with a brand and channel management system. the Derby software customized for various hotel sales channels can butt and hotel resources system.