Packing: 50kg plastic woven bag with plastic bag lining. 500kgs plastic woven bag and 1000kg plastic woven bag, direct packing, no need for repackaging. Indicators: Total nitrogen (N) content (dry base) % ≥ 46.4 biuret content % ≤ 0.85 Moisture content % ≤ 0.5 Particle size (φ0.85-2.80mm) % ≥98