Changzhou Thorgren Chemical Co., Ltd. was established in 2012 and is located in Changzhou High-tech Development Zone, Jiangsu, China. It has two production bases which produce and operate food additives and pesticide intermediates respectively. The Thorgren company is a leading producer and seller or food additives, it is the largest L (+)-tartaric acid producer in the world and the largest l-malic acid producer in China. Its core products including L-malic acid; DL-malic acid; Fumaric acid; L (+)-tartaric acid; DL-tartaric acid; and sweetener aspartame.