With a click of the mouse, a transaction can be completed. That's the power of e-commerce.

So, there is no wonder e-commerce companies are a significant part of the second China International Fair for Trade in Services, which opened on Tuesday.

The five-day event, at the China National Convention Center in Beijing, serves as a high-end platform for e-commerce companies to showcase their latest developments and applications to visitors across the world, organizers and officials said.