Utilize the input text as a context reference, choose the right relationship between Vestas and wind turbine from the options. Options: 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.

Since 2010, Esvagt has been servicing the Bligh Bank Offshore Wind Farm for Danish wind turbine maker Vestas .

Answer: product_or_material_produced