Hot Sales Formula NPK 30-10-10 NPK 30-9-9 NPK 20-10-10 NPK 28-8-8 NPK 20-20-15 NPK 17-17-17 NPK 18-18-18 NPK 19-19-19 NPK 15-15-15 NPK 16-16-16 NPK 15-5-25 NPK 15-5-20 NPK 17-7-17 NPK 19-9-19 NPK 16-16-8 NPK 12-12-17 NPK 16-6-20 NPK 12-24-12 WSF NPK 20 20 20 NPK 19 19 19 NPK 10-52-10 NPK 3-37-37 ETC OEM Designed Formula Tracing Elements: Zn Fe B Mn Mu Cu Granular Color: Green/Blue/Yellow/White/Purple/Red Compound fertilizer refers to chemical fertilizers containing two or more nutrients. The compound fertilizer has the advantages of high nutrient content, less auxiliary components and good physical properties. It is very important for alanced fertilization, improving fertilizer utilization rate and promoting high yield and stable yield of crops.