The increase in primary aluminium production at the smelter to 420,000 tonnes per year could bite into markets also supplied by rival Alcoa (NYSE: AA - news ) and other producers struggling with softer revenue caused by weak prices and rising exports from China.
Refer to the input text as context and select the correct relationship between 'Alcoa' and 'aluminium' from the available options.
Options: legal form, industry, position held, product/material produced