... in CHINA,Shandong province. Our main products: NPK, UREA And Ammonium sulfate. Welcome to visit our factory and find what you ... -17, 0-15-15, 0-18-18, 0-10-205.Ammonium Sulphate,: 21%N, crystal powder, white crystal granular6.Prilled Urea ... 46, Granular Urea 46, etc.7.Ammonium sulfate : N: 20.5% ,White granular 2-4mm. NPK Compound ...