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At the end of 2017, China's civil helicopter fleet was around 900.

At the same time, domestic companies are also eager to sharpen their competitive edge and are no longer looking for merely capital cooperation but to gain higher production capacity from the cooperation with foreign partners, said Zhao Ying, a researcher at the Beijing-based Institute of Industrial Economics.

At the same time, there are risk factors listed in the prospectus, such as the evolving regulatory framework for the online consumer finance industry bringing an uncertain future, and high interest rates of certain loans exceeding the statutory interest rate limit, making them unenforceable in the China's judicial system.

At the beginning of this century, some of the villagers simply abandoned their land or gave it to others practically for free, as working in cities could bring them much higher salaries, said Yan.

At the expo, 551 technology companies will exhibit their products and technology online with the help of virtual modeling technology. It will have 148 foreign participants, such as IBM, Intel, Kawasaki, Siemens, as well as China's world leading technology giants Huawei, Baidu, Alibaba, JD and Tencent.