For more than fifty years, Bartek has been focused on supplying superior quality malic and fumaric acid for a wide range of applications in 40+ countries world-wide. Based in North America, and distributing to customers around the globe in over 35 countries, Bartek is the world's leading producer of malic acid and food-grade fumaric acid. At Bartek, we're always exploring the full potential of malic and fumaric acids, working to deliver innovative solutions that meet our customers' unique formulation challenges.