Marriott International and Delonix Group, one of the leading China-based hospitality companies, today announced a long-term cooperation agreement under which the two companies will work together to grow Marriott's Tribute Portfolio brand in mainland China. The Delonix portfolio currently includes ten hotel brands with over 1,400 hotels open or in the development pipeline. The parties anticipate that at least 100 properties could become part of the Tribute Portfolio over the coming years.