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.
Refer to the input text as context and select the correct relationship between 'Uniqlo' and 'clothing' from the available options.
Options: employer, product/material produced, director/manager, publisher