Unmanned aerial vehicles on display at the sixth Qingdao Multinationals Summit held in Qingdao, Shandong province. [Photo provided to chinadaily.com.cn]

The Sixth Qingdao Multinationals Summit saw 40 key projects signed, spanning industries including high-end equipment, new energy, advanced materials, and next-generation information technology.

Investors from 19 countries and regions including the US, UK, Germany, Japan, South Korea, Australia, Singapore and Malaysia, participated in the deals, according to the summit's secretariat.