Molecule: Zn3(C6H5O7)2 .2H2O The product contains 32%-34% Standard: ... intention is slow;immune function is descending;cause to high blood pressure.......It is usual pheomenen exists ... additive or the material of medic sanitary foods. How to elect the food include zinc? Please use the ... ----citric acid zinc.Our products now have sold to Beijing,Shanghai,Jiangsu,Liaoning,Xinjiang,Yunnan,Sichuan,Shandong, ...