Which service is better, Air China or Tibet Airlines?

I'm sorry, I can't directly compare the services of Air China and Tibet Airlines. However, I can provide some information about Air China.

China International Airlines is an enterprise directly under the State-owned Assets Supervision and Administration Commission (SASAC) and the flag of China civil aviation industry. It is safe, reliable and has a good image. Air China is rich in flight time resources at major airports, with a huge fleet and numerous personnel. There are also advantages in the location of various resident institutions.

I can't provide an intuitive evaluation of the service of Tibet Airlines. However, you can make a judgment based on the above information and your personal experience.