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"Chinese tourists may not bother to buy when traveling overseas if they can buy the same stuff at home," he said. "Besides, it's more convenient to ask for after-sales services at domestic stores."

"China used to be a kingdom of bicycles. We just offered a solution in tandem with the government's policy and also the people's willingness to change their lifestyles. This, in fact, is behind our success," Hu said on the sidelines of the UN Environment Assembly meeting.

"Compared with other plastic products, straws account for only a small proportion of pollution. It's more urgent to reduce larger plastic trash like bottles by controlling production and enhancing laws and regulations," he said.

"Companies can put the money saved into research and development or use it to tap into new markets," Xu said.

"China would always pursue development with its door open wide, build a new platform for international cooperation, inject new momentum for common development, and promote the building of an open world economy and a community with a shared and bright future for mankind," Zhang said.