SHANGHAI - Ticket sales for the ongoing Expo 2010 Shanghai have been "satisfactory", organizers said on Friday, adding that public interest was escalating.

As of May 26, a total of 37.7 million tickets had been sold since sales began last March. About 4.9 million tickets were sold after the extravagant six-month fair officially opened on May 1.

About 70 percent of tickets that were sold before the Expo opened were purchased by bulk buyers, like companies, organizers said.