Shanghai Wintong Chemicals Co., Ltd. Relies on its powerful strength in technical and high qualified consulting team. We have been dedicating to research & development for special fertilizers for many years. We own more than 30000 square meters factory which includes warehouse and professional laboratory in Jiading district, suburb in Shanghai. Our annual output of water soluble fertilizer can reach 20000mts. We all rely on the faith of "superexcellence from professionalism" and provide the first-class service and high quality products for our customers all over the world.