Ferrous sulfate is a mineral additive in animal feed. As a supplement to livestock, it can stimulate the growth of animal body. It can also be used to make pigments, such as iron oxide red.
It can also be used to improve soil quality and remove moss, and as insecticide, for the treatment of wheat, apple, pear and other fruits.
Pigment used to make series of products such as iron oxide (iron oxide red, iron oxide black, iron oxide yellow, etc.).
It can also be directly used as a flocculant for wastewater treatment, water purification, production of iron sulfate, used as iron catalyst.