Macau  - The global financial crisis has taken its toll on Asia's inaugural sex trade show after several firms pulled out of the Asia Adult Expo, a media report said Friday.

More than 60 exhibitors are taking part in the four-day event at the 3,000-room Venetian Macao hotel, the South China Morning Post said.

Kenny Los, chief executive of Vertical Expo Services, which organized the event, said the handful of companies that withdrew were US investment firms specializing in the adult industry.

"They mainly invest in manufacturers and suppliers as well as adult publications," he said.

The expo, which features professional artists and performers, is intended to showcase and increase understanding of adult-related products and services. (dpa)