Specification Appearance: black brown granule Diameter : 2-4mm Humic acid (dry base) : 50%- 55% Organic matter (dry base) : 60%-65% Npk: 3%. Trace element: ca, mg, s, cu, zn, mn, mo. 2) package: 25kg /pp.Woven bag or 25kg / paper bag with inner plastic lining Storage:in sealed and damp-proof place.
