BMW: karl rapp and Max Fritz founded Bayer Aircraft Company in Munich; 19 17, the company was changed to il engine co., ltd, which is the origin of the abbreviation of Bayer (BMW); 19 18 company changed its name to BMW. "BMW" was once translated into Bayl. Since BMW started from the production of aero-engines, the blue in the trademark is the sky and the white is the propeller, which is the first major feature of the "BMW" trademark. The second feature is two metal square air intake grilles in the middle of BMW radiator (nose). Bmw is the abbreviation of the company's full name "Bayerische Motorenwerke AG". "BMW" adopts the figure of inner and outer double circles, and the trademark of BMW is marked above the double circles. The whole trademark is like blue sky, white clouds and a propeller that keeps running, symbolizing BMW's long history, not only symbolizing the company's leading position in aero-engine technology in the past, but also symbolizing the company's consistent purpose and goal: to satisfy customers' greatest wishes with the latest science and technology and the most advanced ideas in a vast space and time, reflecting the company's vigorous spirit and ever-changing new look.

Another understanding is' don't touch me', hehe.