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"Drones are over 10 times more efficient than skilled manpower and they are cost-effective and environmentally friendly," said Li Liping, a major grain grower in the county-level city of Xiangxiang in Central China's Hunan province.

"Equipped with (a) range extender, Leading Ideal One can travel 700 kilometers and even 1,000 km on one charge and one fuel filling," said Li Xiang, founder and CEO of Beijing CHJ Automotive Technology Co at the launch event.

"Definitely, this (strategy) will have a positive impact (to the world)," Lopez said.

"Efforts to stabilize the global supply chain had made Chengdu Shuangliu International Airport one of the busiest airports in the world in May," said Xia Ying, a customs and logistics official with the Chengdu municipal government.

"During the last two years, annual rainfalls have been well below long-term averages. In addition, annual rainfall patterns have changed, so that there are longer periods between rain events. This has resulted in drought conditions in many parts of Australia."