The Hong Kong Exhibition and Convention Industry Association released its annual survey this week, showing positive numbers. In 2010, more than 648,000 visitors from outside of Hong Kong attended trade shows in the Chinese special administrative district, an increase of 13 percent from 2009. The boost was supported by an 18 percent increase in visitors from Europe, the Americas, Africa and the Middle East, to 214,000, while visitors from mainland China increased by 10 percent, to 232,000. An additional 202,000 came from regional destinations such as Australia, New Zealand, the South Pacific and Asia -- an increase of 13 percent. The number of exhibiting companies increased by just 2 percent, to 56,800, though the increment of space occupied rose by 10 percent, to nearly 9.3 million square feet.