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At present, there is no technological difficulty in applying logistics drones for commercial use, Zheng said, pointing out that the main hurdle for their wide application remains on the institutional side.

At the same time, an intelligent monitoring system will automatically issue inventory alerts and properly adjust portfolios based on sales history. The scale of the alliances gives them leverage over the product brands, resulting in better margins both for the stores and for JD and Alibaba.

At the G20 forum, efforts to reform the WTO dispute settlement system should be prioritized to avert the acute Appellate Body crisis that looms in late 2019, Liu said. "China, as a major member of the WTO, will definitely benefit from the organizational reform," he added.

At the same time, the bureau, doctors, experts and drug users' families held a group birthday party for more than 20 people whose birthdays fell in November, "to offer them support and to encourage them to stop taking drugs and return home", it added.

At the start of this year, police in Zhuhai, Foshan and Dongguan identified suspects selling powder guns, air guns and controlled knives through social networking sites based on evidence uncovered in Guangzhou and Shenzhen.