We are the manufacturer producing C-4 series organic acids and its salts, including L-malic acid, DL-malic acid, L(+)-tartaric acid, DL-tartaric acid, fumaric acid, a***rtame, L-alanine, DL-potassium bitartrate, and cream of tartar. Our annual producton volume exceeds 30,000 tons. Our products are widely used around the world in food, pharmaceutical and chemical industries.