Hainan Island Travel Guide: Online book sale and promotion of a travellers' guide for this tropical island.
Hainan Perfect Holiday Travel Agency Co., Ltd.: Local Hainan travel agent offers cheap flights and hotels.
Hainan Travel Guide: Introduction of tourist attractions in Hainan province, including Bo'ao, Haikou, and Sanya.
Travel China Guide: Hainan: Basic information, with further coverage of the main attractions.