Georgia-Pacific, the maker of Brawny paper towels, Dixie cups and other consumer products, has a new president and chief executive.

The Atlanta-based unit of Koch Industries said Christian Fischer was promoted to the post after a decade as executive vice president of the company’s packaging and cellulose segment.

Fischer succeeds Jim Hannan, who was promoted to a broader, newly created job that includes oversight of Georgia-Pacific as well as other units of Kansas-based Koch Industries. Hannan had been Georgia-Pacific’s president and CEO since 2007.

Georgia-Pacific brands also include Quilted Northern and Angel Soft toilet paper and Vanity Fair napkins. It also supplies building products to dealers and home improvement retailers, and it has a recycling business, GP Harmon Recycling, that it says is among the world’s largest.

Georgia-Pacific has about 35,000 employees. About 2,600 are in Atlanta, most of them at the company’s ruddy, granite tower downtown.

The company is renovating about half the floors of the tower and says it could add or relocate about 600 jobs there over several years.

Koch Industries acquired Georgia-Pacific in 2005.