German sanitary fittings maker Grohe said Thursday that Japanese housing and building materials company Lixil has agreed to take it over in a deal valuing the German group at 3.06 billion euros ($4.1 billion). Grohe \"has entered into an agreement with Lixil and Development Bank of Japan in relation to the sale of an 87.5-percent equity interest in Grohe. This transaction represents the largest ever German investment by a Japanese company,\" the German group said in a statement.