Taoyuan’s iron dextran using advanced complexing process to ensure that the iron element is completely transformed into organic complexing iron. The unique electrodialysis nanofiltration technology and the second ultrafiltration technology are used to completely remove all kinds of impurities produced in the production process, eliminate allergens, higher safety and avoid unconverted of free iron salts cause allergic stress on piglets. Better absorption, faster iron supplement, iron absorption rate is higher, to achieve excellent iron supplement effect. The injection of Taoyuan’s iron dextran can significantly stabilize the hemoglobin content in the piglet within 10 days after injection. Due to the low viscosity of the product itself, low salt, no precipitation, good stability and fluidity, it can ensure that the unabsorbed iron content in the injection site is less than 20%, so as to enhance the piglet's physique, rosy skin, bright coat, enhance the resistance to disease etc.