1.high absorption efficiency 2. Best Calcium fertilizer EDTA-Ca10chemical name:ethylenediaminetetraacetic acid, calcium disodium complexCAS-No:62-33-9,Molecular Formular:C10H12N2O8CaNa2.2H2O,Molecular Weight:410.13Appearance: white powder,Chelated Ca:10%,Insoluble matter in water:0.1%max,pH (1% of the solution):6.5-7.5.Packing : 25kgs plastic wovenbag,24MTs/20'FCL