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Besides, the purchase of high-tech equipment and services by 330,000 enterprises which enjoy preferential tax policies on research and development rose 22.3 percent in the second quarter, pointing to companies' continuous investment in science and technology amid the COVID-19 fallout.

Betting on its strength in smart logistics, JD has established a logistics business unit to oversee smart supply chains and is comfortable using drone technologies to offer delivery services in out-of-the-way locations without incurring high logistics costs.

Besides, 341 companies from 17 Belt and Road countries and regions also attended the fair's import exhibition, which provided a major platform for them to explore the Chinese market and meet buyers from around the world.

Biden expects to face pointed questions about race in particular, having stumbled in the opening debate in June when confronted by Harris over his record on school integration. Booker in recent days has seized on Biden's decades-old support for criminal justice laws that disproportionately hurt minorities.

Besides making marketing and delivery precise, AI-based technology also offers the megastore with "cloud shelf", an interactive digital wall that stores information on a large amount of goods for consumers to select from.