CRH plc is an international group of diversified building materials businesses which manufacture and supply of a wide range of products for the construction industry. The company is incorporated and domiciled in Ireland where it ranks as the largest Irish company. CRH has a primary listing on the London Stock Exchange and is a constituent of the FTSE 100 Index. It has secondary listings on the Irish Stock Exchange (where it is a constituent of the ISEQ 20) and New York Stock Exchange.