Crown Champion, established in 2000，is one of the leading fertilizer exporters from China. Our Factories, Tianjin Topfert Agrochemical Co., Limited and Tianjin Crown Champion Industrial Co Ltd mainly engaged in producing and exporting Ammonium Sulphate Granular, Kieserite (magnesium sulphate ) etc magnesium series fertilizers as well as nitrate fertilizers including (CAN ) and SOP etc potassium fertilizers.