Active ingredients of the extract are magnolol and honokinol. Honokiol and Magnolol > 50%-98% Extracted part: bark Appearance brownish yellow, Yellow or Light yellow powder Particle size: passed 80 mesh Moisture: < 5.0% Arsenic: <2ppm Heavy metals: < 20ppm Inner packing: 25kg/double-layer aluminum foil bag Outer packing: Fiberboard drum