Reportedly two construction materials industry groups are looking at Lafarge-Holcim assets valued at up to €7B - press - Ireland's CRH and Mexico's Cemex said to plan a joint bid for the entire portfolio of assets that Lafarge-Holcim are being required to sell as a condition for approval of their planned merger. Germany's HeidelbergCement and Brazil's Votorantim Cimentos SA are also considering a joint bid for the assets. Several private equity groups are also considering bids