Airlines logo! [First Episode]
An airline provides air transport services for passengers or freight. Airlines lease or own their aircraft with which to supply these services and may form partnerships or alliances with other airlines for mutual benefit. Generally, airline companies are recognized with an air operating certificate or license issued by a governmental aviation body.

Here are introduced of 25 logos from a lot of airlines over the world. This is the first article/episode about airlines logo. In future, I will introduce more. Right now, fasten your seatbelt and let’s take off!
International Aviation Code: KL
Netherlands

International Aviation Code: QF
Australia

International Aviation Code: SV
Saudi Arabia

International Aviation Code: AA
United States of America (USA)

International Aviation Code: BA
United Kingdom (UK)

International Aviation Code: SU
Russia

International Aviation Code: OS
Austria

International Aviation Code: AC
Canada

International Aviation Code: BG
Bangladesh

International Aviation Code: AI
India

International Aviation Code: AF
France

International Aviation Code: RG
Brazil

International Aviation Code: LH
Germany

International Aviation Code: JL
Japan

International Aviation Code: MH
Malaysia

International Aviation Code: EK
United Arab Emirates (UAE)

International Aviation Code: NZ
New Zealand

International Aviation Code: PR
Philippines

International Aviation Code: SQ
Singapore

International Aviation Code: TH
Thailand

International Aviation Code: CA
China

International Aviation Code: QR
Qatar

International Aviation Code: LO
Poland

International Aviation Code: AM
Mexico

International Aviation Code: MD
Madagascar

Airlines vary from those with a single aircraft carrying mail or cargo, through full-service international airlines operating hundreds of aircraft. Airline services can be categorized as being intercontinental, intra-continental, domestic, or international, and may be operated as scheduled services or charters. Source: Wikipedia
The logo you have for Air China is wrong.
China Airlines is the official flag carrier of Taiwan. Air China is the official flag carrier of China. They are not the same company.