... , microelement (Cu, Fe, Zn, Mn, B), alginic acid, cytokinin, betaine, mannitol, polysaccharide, iodine and so on. Product Specification INGREDIENTSPECIFICATION1. APPEARANCE Black ... (%) ≥12--169. MICROELEMENT(Cu+Zn+Fe+B+Mo) ≥3.510. MANNITOL(%)≥1.811. POLYPHENOLS(%)≥0.212. PH≈6.8--10.013 ...