International leaders speak highly of China's contributions to world economic and technological development at the fourth China International Import Expo.

Italian Prime Minister Mario Draghi said the CIIE, one of the biggest trade promotion events in China and globally, embodies China's commitment to international trade and shows the innovation and creativity of humanity.

New technologies have changed both the form and substance of trade, which helps to increase the share of service trade and blurs the traditional boundaries between services, agriculture and industrial manufacturing, said Argentine President Alberto Fernandez.

Let's take a look at who are some of the other guest speakers at the opening ceremony of the fourth China International Import Expo and the Hongqiao International Economic Forum.