1-High Quality 2-Competitive Price 3-Good Service: Presale, In Sale & After Sale 4-Experienced Work Team 5-OEM/ODM available ItemUnitIndexMain Content% min90Phosphorus Pent-oxide% min45N+P2O5% min64(N18 P46)Water Insoluble% max0.1Moisture% max2Nitrogen as N% min17Granularity1.00-4.00mm90