Refer to the input text as context and select the correct relationship between 'Lafarge' and 'cement' from the available options.
Options: position held, business division, publisher, product/material produced

The factory which expects to start production this month, will be competing with other Tanzanian cement producers including Tanzania Portland Cement, owned by a subsidiary of Germany's Heidelberg Cement AG; Tanga Cement, majority owned by Afrisam Mauritius Investment Holdings Limited; and Mbeya Cement, owned by France's Lafarge SA.
product/material produced