Ferro- : A prefix, or combining form, indicating ferrous iron as an ingredient; as, ferrocyanide.

Example:
How do I find a list of Steel Plants and Ferro Alloy Plants in India?

Taxonomy
Performance Materials, Ferro Corporation, The Performance, Materials Company, industrial products, pharmaceuticals, global supplier, technology-based, market applications, solar energy, telecommunications, renovation, appliances, household furnishings, English, Japanese, Chinese, Russian.

Defination from the web:
Producer of specialty materials in a wide range of areas.