Which one is better, CITIC Sea Direct or China Southern Airlines?

Not suitable for comparison.

1. CITIC Haixi is a national general aviation company established in March 1983. It has the largest helicopter fleet in Asia and a complete flight, maintenance, navigation, maintenance and logistics support team. It operates very quickly across the country. One of the world's largest helicopters, it was listed on the Shenzhen Stock Exchange in July 2000.

2. China Southern General Aviation, headquartered in Guangzhou, has a blue vertical tail inlaid with red kapok as its company logo. It is the airline with the most transport aircraft, the most developed route network and the largest annual passenger volume in China. It has 7 holding public air transport subsidiaries in Xiamen, Henan, Guizhou and Zhuhai, 21 branches in Xinjiang, North China and Beijing, etc., and 21 domestic sales departments in Hangzhou, Qingdao and other places, and has offices in Singapore, New York, There are 53 overseas sales offices in Paris and other places.