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"Economic and trade cooperation has always been an important pillar of BRICS relations. We are committed to strengthening economic integration in the area," he told a news conference.

"Deepening technological progress and economic globalization present to all countries unprecedented opportunities and an urgent necessity to enhance economic and technological cooperation," said Wang.

"E-cigarettes are sometimes viewed with suspicion because we have incomplete knowledge," said Wen Yilong, RELX co-founder and head of science, research and development and supply chains at the company. "The RELX bioscience lab's mission is to explore the unknown. We want to collect evidence through a scientific approach and strive to prove the potential for e-cigarettes to be less harmful, and in doing so, provide users the option to choose an alternative."

"Durable and environmentally friendly chemical products are a key enabler for the development of many downstream industries," he said.

"Developing metropolitan areas will support the urbanization process, which requires cities to further open up, and shift their functions from manufacturing-oriented development to high-quality services. Some key areas include information technology and the knowledge-based economy," he said.