NPK 15-15-15,16-16-16 17-17-17,18-18-18 19-19-19,20-20-20 Active ingredientN-P2O5-K2OAppearance40%17-8-15granular size2 ... size2-4mm, 90% min40%20-20-0granular size2-4mm, 90%min42%16-8-18granular size2-4mm, 90%min43%16-6-21granular size2-4mm, 90 ... , 90%min45%14-16-15granular size2-4mm, 90%min46%16-8-22granular size2-4mm, 90%min48%16-16-16granular size2-4mm, 90%min NPK fertilizer