... compound fertilizer, contains NPK, organic fertilizer and natural mineral. 15-15-15; 10-10-10 etc NPK Compound Fertilizer The seaweed compound ... % + Ca, Mg, Zn, Fe, etc.2.3 NPK: 12-8-15 with seaweed: 10% + organic matter: 20% + Ca, Mg, Zn, ... 10% + organic matter: 50% + Ca, Mg, Zn, Fe, etc.2.9 NPK: 5-1-1 with seaweed: 10% + organic matter: 50 ... 20 Kgs/Bag or required by customers NPK Fertilizer 15-15-15