Retailer Billa Romania, a subsidiary of German Rewe, is planning to expand its supermarket chain by eight to 10 outlets in 2007. The company's ceo Wolfgang Janisch said it will invest an average of EUR 5 mln in each supermarket, and plans to open new outlets in cities including Medias and Reghin, in the northwest of Romania, and Giurgiu, in the south, in order to increase its network in the country by 30 units before the end of the year.