Winemakers have taken significant steps to battle widespread trade in fakes. Some top brands have taken heavy hits after being targeted by counterfeiters, reported AFP, particularly the most famous vintages. Companies have taken steps ranging from monitoring partners to marking bottles using special engraving moulds, holograms or computer chips that guarantee authenticity and traceability. Still, the battle to combat the production and distribution of fake wines in China is an uphill one, producers said during the Vinexpo conference in Hong Kong, although some expect China's WTO entry will force the government to take more decisive steps.