Qingdao Kehai Biochemistry Co., Ltd, a subsidiary company of Qingdao Langyatai Group Co., Ltd, is Qingdao high-tech enterprise and key biotechnology enterprise. The main products are itaconic acid and derivative of itaconic acid, sodium gluconate-based products, Ruimin eco-fertilizer and so on. The company possesses the annual output of 20,000 tons itaconic acid, 50, 000 tons sodium gluconate, 2,000 tons delta-gluconolactone, 2,000 tons gluconic acid, 1000 tons Isomaltulose, 2,000 tons Carbamide Liquor and2,000 tons calcium gluconate,. Qingdao Kehai Biochemistry has been widely known as the large-size enterprise with the biggest itaconic acid output, best quality and fastest profit growth in China. The company is also the largest producer and the largest R&D base of itaconic acid products in the world. Kehai has become the most famous in the global itaconic acid industry.