Madrange, a major French producer of ham and charcuterie, has announced two acquisitions likely to been seen by competitors as signals for the widely expected corporate upheaval in the European pigmeat processing sector.Limoges-based Madrange, a family controlled company with annual turnover of about £200m and 50,000 tonne production capacity, describes the purchases of French regional cooked meats companies Robert Antoine and Fontaine de Savoie as part of a £20m expansion programme to broaden its product range and help boost market share.