Xiamen Topusing Chemical Co., Ltd founded in 1998. For many years, Topusing is dedicated to research and development of wide range of plant nutrient solutions for agriculture and horticulture.With more than 20 years experience of activity, now Topusing becomes one of the most efficient and reliable providers of plant nutrient solution. Our products have been exporting to over 80 countries. We select superior raw materials, manufactured according to the top standards.