Leaders of six giant express delivery companies in China pose before delivering packages in person during the 2016 Global Smart Logistics Summit in Hangzhou, capital of East China's Zhejiang province, June 13, 2016.[Photo/VCG]

It's not every day that CEOs of major companies come knocking on your door to deliver their products to you in person. But that's exactly what happened on Monday.

Leaders of six giant express delivery companies in China delivered packages to their customers in person during the 2016 Global Smart Logistics Summit, which was hosted by Cainiao in Hangzhou, capital of East China's Zhejiang province.

Cainiao, or Rookie Logistics in English, was jointly established by Alibaba Group, Intime Group and some of the country's major delivery companies in 2013.

More than 70 percent delivery services in China are carried out by the six giants currently.