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Amazon’s?never disclosed how?many members it has, but analysts routinely guess it is close to 40 million. They also say that customers who sign up for Prime are more likely to shop?more and less likely?to comparison shop. Obviously, adding more Prime members will in turn hurt Walmart and other retailers more than the impact of a one-day sales event.

Among the most crucial challenges is developing versatile offline retail channels that would combine the advantages of both physical retail and online shopping.

Among Hema app users, the conversion rate for making a purchase was as high as 35 percent, although again detailed figures were not disclosed.

Among them, Luc Van Den Hove, president of the Interuniversity Microelectronics Centre (IMEC), and Rob Van Kranenburg, founder of the European IoT Council, hailed China's progress in developing the technologies and expressed wishes to cooperate with local enterprises via videos.

Amazon’s?letter comes as more than 900 authors — including well-known?novelists?such as John Grisham and Stephen King — take out an ad in the New York Times?pressing Amazon to resolve the dispute.