Visitors select iron kettles at an exhibition booth of a Taiwanese exhibitor at the 23rd Kunming Import and Export Fair in Kunming, capital of southwest China's Yunnan Province, June 12, 2015. The third China-South Asia Expo was held simultaneously with the Expo from June 12-16 in Kunming. (Xinhua/Chen Haining)

Visitors buy commodity from a Cameroon exhibitor at the 23rd Kunming Import and Export Fair in Kunming, capital of southwest China's Yunnan Province, June 12, 2015. The third China-South Asia Expo was held simultaneously with the Expo from June 12-16 in Kunming. (Xinhua/Chen Haining)

A Pakistan exhibitor presents his products at the 23rd Kunming Import and Export Fair in Kunming, capital of southwest China's Yunnan Province, June 12, 2015. The third China-South Asia Expo was held simultaneously with the Expo from June 12-16 in Kunming. (Xinhua/Chen Haining)