What is the relationship between Ternium and steel in the context of the input sentence. Choose an answer from: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

In contrast, our blast furnaces in Brazil and Argentina were able to keep operating as they reduced production to technical minimums and increased shipments to other Ternium facilities in the region, which in turn adjust their steel procurement and production lines.

Answer: product_or_material_produced