Utilize the input text as a context reference, choose the right relationship between Uniqlo and clothing 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.

Last month, the Hong Kong garment manufacturer said it had so far failed to negotiate an agreement with striking workers at the Artigas factory in Shenzhen, which is a supplier to Fast Retailing, operator of the Uniqlo casual clothing chain.

Answer: product_or_material_produced