Anhui Sealong Biotechnology Co., ltd is the leading manufacturer of dl-malic acid and fumaric acid in China. In 1990, as the first producer in China, we began to produce malic acid. And now, we are the biggest manufacturer of dl-malic acid in China, the main products are dl-malic acid and fumaric acid. The annual capacities are 20000 mt. In order to producing high quality Fumaric Acid, we abandon Thiourea as catalyst but adopt high-temperature method directly to assure and enhance the quality of product. So our product does not contain any residual of catalyst. Both whiteness and purity of our product are superior, the specification meet the requirements for high quality raw materials. We have got relevant certifications such as Kosher/Halal/BRC/Famiqs,etc. and cooperate with many f..