What is the relationship between Airbus and aircraft 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.

Airbus opened its first non-European aircraft assembly plant in Tianjin in 2009 and extended the co-operation venture with Chinese interests to 2025, in a fresh agreement last year.

Answer: product_or_material_produced