our factory speciataly manufactrue manganese sulphate ,ferrous sulphate,copper sulphate,zinc sulphate,ZnO,magnesium sulphate,microelement premix feed.

feed grade:

magnesium sulfate   (monohydrate)  ,MgSO4·H2O   91.0%       Mg    16.5  min

pb   0.001  max,    As    0.0002  max ,   white powder

 

agriculture grade: 

magnesium sulphate  ,  MgSO4·7H2O  99%,   Mg  9.6%  MIN,