The first is China Travel Service, the second is China National Travel Service, the third is Shanghai Spring and Autumn International Travel Service, and the fourth is China Comfort Travel Service. These travel agencies are all worth participating.

1. China Travel Service, a well-known trademark in China, a subsidiary of China Travel Service Group Corporation in Hong Kong, and vice president of China Travel Service Association

Unit, China Travel Service Co., Ltd.

2. China International Travel Service, one of the top 500 Chinese enterprises, a listed company, currently one of the largest and most powerful travel agency groups in China, China International Travel Service Co., Ltd. .

3. Shanghai Spring and Autumn International Travel Service is the parent company of Spring Airlines. It was established in 1981 and was awarded the only famous trademark enterprise among Shanghai travel agencies. It is the first travel agency in China to establish a wholly-owned airline; a Shanghai AAAAA-level travel agency; the earliest member of the International Convention and Convention Association (ICCA) among Chinese travel agencies; ranked first among the top 100 travel agencies in the country in 2018.

4. China Kanghui Travel Agency Co., Ltd., founded in 1984, is one of the country's large travel agency groups with a registered capital of more than 100 million yuan. "China Kanghui" is a large international travel agency in China and a nationally licensed travel agency. It operates an outbound travel agency for Chinese citizens, and its business scope includes inbound travel, outbound travel and domestic travel.