Utilize the input text as a context reference, choose the right relationship between 'Holcim' and 'cement' from the options.
Options: product/material produced, industry, creator, headquarters location

The firm has just named Wolfgang Reitzle as an advisory partner the very same Wolfgang Reitzle who hired Perella Weinberg as an adviser to steer the rocky $44bn (£28.2bn) merger between his Swiss cement firm Holcim and its French rival Lafarge (EUREX: 504482.EX - news ) .
product/material produced