The NPK fertilizer with the formulation 15-15-15+S+B contains specific percentages of three major nutrients nitrogen (N), phosphorus (P), and potassium (K as well as sulfur (S) and boron (B). N (Nitrogen): 15% Nitrogen is crucial for promoting vegetative growth, including the development of leaves and stems. P (Phosphorus): 15% Phosphorus is essential for root development, flowering, and fruiting. K (Potassium): 15% Potassium is vital for overall plant health, disease resistance, and various physiological processes. S (Sulfur): Sulfur is a secondary nutrient that plays a role in the formation of certain amino acids and proteins, contributing to plant growth and development. B (Boron): Boron is a micronutrient that is essential for various physiological processes in plants, including cell division, pollen germination, and sugar transport. This particular fertilizer formulation, 15-15-15+S+B, is designed to provide a balanced combination of major nutrients (N, P, K) along with additional sulfur and boron to support plant growth and development. As Ark Global Kimya, we do wholesale and export NPK Fertilizers