HONG KONG : The fourth Asian Vinexpo featuring 840 exhibitors from 32 countries opened Tuesday in Hong Kong as the global economic crisis pushed exporters to focus on the world's most promising market: China."A little like 2009 vintage Bordeaux, this Vinexpo is exceptional. There are more exhibitors and we expect more than 10,000 professionals, including a large number from China," said chief executive Robert Beynat.The annual wine and spirits fair is key to Hong Kong's bid to turn itself into a wine trading centre that sits on the doorstep of the vast Asian market with Chinese consumers showing a growing demand for foreign products.