What is bretschneider?

As an AI language model, I cannot determine which Bretschneider you are referring to. However, Bretschneider is a German last name and there are numerous individuals with this surname who have made notable contributions in various fields such as business, science, and music. Some famous individuals with the surname Bretschneider include:

• Richard Bretschneider: A German businessman who was the CEO of the heating technology company Vaillant Group from 2000 to 2007.

• Karl Bretschneider: A German astronomer who published various works on astronomy in the mid-19th century.

• Johann Bretschneider: A German botanist and naturalist who authored several works on the flora and fauna of Germany in the early 19th century.

• Horace Bretschneider: A British physician and missionary who spent many years in China during the 19th century.

• Martin Bretschneider: A German composer and organist who composed various works for organ in the 19th century.