Analyze the relationship between 'CRH' and 'cement' within the context of the input sentence.
Options: stock exchange, legal form, product/material produced, industry

MANILA, July 22 (Reuters) - Aboitiz Equity Ventures Inc said it will invest 24 billion pesos ($531 million) in the cement business after formalising a deal with Irish cement maker CRH Plc (NYSE: CRH - news ) to buy the Philippine assets of Lafarge SA .
product/material produced