mail: songmiao17 at gmail dot com chemicals517 at yahoo dot com dot cn TEL:86-15965013577 MSN: chemicals517 at hotmail dot com songmiao17at hotmail dot com yahoo: chemicals177 at yahoo dot com Skype : bewitchery17 ICQ:557172026 QQ:705406868 Spec：GB1625-79 Battery A level B level Controlled Standard ZnCl2% ≥98.00 ≥98.00 ≥96.00 ≥98.50 ZnO % 1.8~2.2 2.2 2.2 1.8~2.2 SO4% ≤0.01 ≤0.01 ≤0.05 ≤0.01 Ba % ≤0.1 ≤0.1 ≤0.2 ≤0.06 Fe % ≤0.0005 ≤0.001 ≤0.002 ≤0.0004 Pb % ≤0.0005 ≤0.001 ≤0.002 ≤0.0004 Zinc piece corrision grade：meet all regulations in NO 15 of the Standard.