Tenimenti Ruffino, the Tuscan winery, has made a major investment in northeastern Italy, breaking it says "traditions dating back to 1877". The company has acquired Borgo Conventi, an estate located in Friuli for US$8.5m.   Adolfo Folonari, company export director said: "We have decided to invest in Friuli because its terroir is one of the best in Italy for the production of white wines."