... ,such as grade 553,441,3303,2202,etc. Grade 2202Si>99.5% Fe≤0.2%Al≤0.2%Ca≤0.02%P ... ≤0.004% Grade 3303Si>99.3% Fe≤0.3%Al≤0.3%Ca≤0.03 ... %P≤0.005%Grade 441Si>99.0% Fe≤0.4%Al≤0.4%Ca≤0.1 ... %Grade 553Si>98.5% Fe≤0.5%Al≤0.5%Ca≤0.3%Size:10-100mm,90%minPackage ... AE.run.minisite.productShow(); oProductShow.init( { 'aImgSrc': aBigImageSrc } ); } )(); silicon metal 99