Product Name: NPK Fertilizer for PotatoesPlace of Origin: ChinaFeatures: 1) 42% NPK (16-5-21) 2) This product regulates the physical system of potatoes and increases the output, as well as accelerates the formation and accumulation of the amylum so as to improve the quality 3) Specially used for potatoes Packing: 50kg/knitted plastic bag, or according to customers\'\' requests