What is the relationship between 'Airbus' and 'aircraft' in the context of the input sentence.
Options: original broadcaster, publisher, operator, product/material produced

Mounting pressure on suppliers for price cuts comes as Airbus and Boeing are raising production of their single-aisle models to around 50 aircraft a month each, up from 42 a month, and pondering a further step-up to 60 a month.
product/material produced