(Decanter) - Chateau Lafite Rothschild has said all bottles from the 2009 vintage will use Prooftag anti-fraud seals. Prooftag is a capsule seal with a 13-numbered code authenticating individual bottles. Carruades de Lafite, the property’s second wine, will use the same system from the 2010 vintage, as will any earlier vintages coming direct from the chateau. As part of the same anti-fraud strategy, the chateau is also engaging more directly with Chinese consumers, and has opened up an account on Weibo, known as the Chinese twitter.