... such as NPK compound fertilizer, composts, Nitrogenou fertilizer(ammonium sulphate, ammo di ammonium phosphategranular fertiliser> N 12%> P 18%> K 0 ... , chemical fertilizer, humic acid fertilizer, slow-release fertilizer, ammonium sulphate, potassium sulphate,potassium chloride, etc... We also could ... Zn etc) in the compound fertilizer for customer requirements di ammonium phosphate granular fertiliser