Zhangjiagang Free Trade Zone Yudong International Trade Co.,Ltd. was founded as Henan Aosen Chemical Technology Stock Co., Ltd., which was mainly engaged in the production and trade of fine chemicals and pharmaceutical intermediates. With the development of business, we founded Zhangjiagang Free Trade Zone Yudong International Trade Co.,Ltd. in 2002. Situated near north gate of Zhangjiagang Bonded Zone (500 meters from harbor only), thus we enjoy excellent preferential policy provided by Bonded Zone, including "exemption and reduction of duty", "tax exemption" and "bonded system"; moreover, we enjoy good location and excellent traffic condition for we are very close to Shanghai.

Over more than sever years' hard working, Yudong has experienced great development and become a leading company in this field. To get success in competitive market, we founded our production bases in Jiangsu and Anhui province, all of them are established upon the unique advantages of local place on basic materials. Relying on excellent quality, strict management system, leading business idea and honest service, Yudong has been highly appraised by our customers in chemical industry for years; taking all these advantages, Yudong now successfully establishes long-term cooperative relationships with large-scale chemical companies all over the world, and becomes the agency of their products. Our main products are formamide, oxalic acid, diethyl oxalate, sodium methoxide and diethyl malonate; they are well sold in USA, EU, The Middle East and Southeast Asia, etc. As a leading company in this industry, we yearly sell 5,000 tons of formamide, 5,600 tons of oxalic acid, 1,500 tons of diethyl oxalate, 6,000 tons of sodium methoxide and 3,000 tons of diethyl malonate.