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"Ge ma va?", Shanghai dialect for "Is it for sale?", might have been the most-heard question to thousands of international exhibitors at the China International Import Expo in the last two days.

"Good-selling brands have good bargains from suppliers, and some are raising the prices of their cars a little bit, but the customers still love them," Wu said.

"Good-quality straw can be made into artifacts and furniture, while low-quality ones can be turned into manure and be put back to the field," Liu Youwei said.

"Fresh food is the most demanding category in e-commerce, and covers a range of fields including logistics, finance and users operation. But at the same time, it has huge market potential," said Lyu Haoze, an analyst of China E-Commerce Research Center.

"For example, the app will be able to recommend a better destination and automatically divert congested roads as well as waterlogged roads based on the weather forecast," Liu said.