... :20%-80%CAS NO.1313-13-9Formula:MnO2Fe1.0%-10%P<0.3%Propertiesblack or brown granuleSiO2 4%-18%Relative Density5 ... Quality certificateISO 9001:2008Delivery TermsFOB,CIF,CFRPayment termsTT ,L/C, D/P,EXWOriginXiangtan city,Hunan province,China.Delivery time5-10 days after ...