Utilize the input text as a context reference, choose the right relationship between Fletcher Building and construction 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.

Among the blue chip stocks, construction company Fletcher Building fell 0.1 per cent to $8.27, telecommunications retailer Spark New Zealand declined 0.7 per cent to $2.86, and Auckland International Airport rose 0.6 per cent to $5.205.

Answer: industry