Citroen Automobile Company is the third largest automobile company in France. It was founded in 1915 by Andre Citroen. Citroen is headquartered in Paris, France. The total number of employees is about 5,, with an annual output of 9, cars. The main products are passenger cars and light trucks.

when Andre Citroen was born in Paris, France in 1878, his family could not foresee that decades later, the Citroen automobile brand he founded made the family name a household name. In 19, Andrew was about to graduate from Polytechnic Institute (Paris Institute of Technology). When he visited a company specializing in the production of transmission gears in Poland, he saw herringbone gears. With the knowledge he learned in the university, he knew that this kind of gears had many advantages over ordinary spur gears, but the manufacturing process was complicated. Citroen, with its unique sensitivity, decided to buy out the invention patent, and quickly went through the formalities and got the patent certificate. After returning to Paris, Citroen immediately put the invention patent he bought into trial production. In this way, the herringbone gear not only became the main product of the gear company founded by Citroen in 194, but also became the trademark logo of Citroen automobile.