Zinc is the forming element of many enzymes and hormone and participates in metabolism of protein.

specification(tech-grade)                                             (feed grade)

ZnSO4    98%min                                                           94.7%min

Zn          35.5%min                                                         35.5%min

Mn         0.01%max

pb         0.002%max                                                      0.0015%max

water insoluble 0.05%max                                              0.05%max

cd          0.002%max                                                        0.001%

ph         4.0min                                                                 4.0min

Cu         0.001%max

Fe         0.008%max

    Carbohyarate  and lipid as well.when lack of zinc ,animals exhibit inappetence slow grawth ,thick

and disorderly clothing hair ,depilation ,dry and chappy skin and unease-cure wound ,adding high

dosage zinc in initial feed for sucking ,can reduce diarrhea and increase weight.